Answer:
Therefore, the circumference of the circle circumscribed about the right triangle with legs 5 cm and 3 cm is approximately 18.85 cm (rounded to two decimal places).
Step-by-step explanation:
To find the circumference of a circle circumscribed about a right triangle with legs 5 cm and 3 cm, we can use the Pythagorean theorem to find the length of the hypotenuse, which is also the diameter of the circle.
Using the Pythagorean theorem, we have:
c^2 = 5^2 + 3^2
c^2 = 25 + 9
c^2 = 34
c = sqrt(34)
So the diameter of the circle is sqrt(34) cm, and the radius is half of the diameter, or sqrt(34)/2 cm.
The circumference of a circle is given by the formula:
C = 2 * pi * r
where pi is approximately 3.14 and r is the radius of the circle.
Substituting the value of the radius, we get:
C = 2 * 3.14 * sqrt(34)/2
C = 3.14 * sqrt(34)
Therefore, the circumference of the circle circumscribed about the right triangle with legs 5 cm and 3 cm is approximately 18.85 cm (rounded to two decimal places).
Find the equation in standard form of the circle with center at (4, −1) and that passes through the point (−4, 1).
Answer:
The standard form of the equation of a circle with center at (h, k) and radius r is:
(x - h)^2 + (y - k)^2 = r^2
We are given that the center of the circle is (4, -1), so h = 4 and k = -1. We also know that the circle passes through the point (-4, 1), which means that the distance from the center of the circle to (-4, 1) is the radius of the circle.
The distance between two points (x1, y1) and (x2, y2) is given by the distance formula:
d = sqrt((x2 - x1)^2 + (y2 - y1)^2)
So the radius of the circle is:
r = sqrt((-4 - 4)^2 + (1 - (-1))^2) = sqrt(100) = 10
Now we can substitute the values of h, k, and r into the standard form equation of a circle:
(x - 4)^2 + (y + 1)^2 = 10^2
Expanding the equation gives:
x^2 - 8x + 16 + y^2 + 2y + 1 = 100
Simplifying and putting the equation in standard form, we get:
x^2 + y^2 - 8x + 2y - 83 = 0
Therefore, the equation in standard form of the circle with center at (4, −1) and that passes through the point (−4, 1) is:
x^2 + y^2 - 8x + 2y - 83 = 0
According to Thomson Financial, last year the majority of companies reporting profits had beaten estimates. A sample of 162 companies showed that 94 beat estimates, 29 matched estimates, and 39 fell short.
(a) What is the point estimate of the proportion that fell short of estimates? If required, round your answer to four decimal places.
pshort = .2407
(b) Determine the margin of error and provide a 95% confidence interval for the proportion that beat estimates. If required, round your answer to four decimal places.
ME =
(c) How large a sample is needed if the desired margin of error is 0.05? If required, round your answer to the next integer.
n* =
a)0.2407 is the point estimate of the proportion.
b) The 95% confidence interval for the proportion that beat estimates is (0.4858, 0.6746).
c) A sample size of 754 is needed to achieve a desired margin of error of 0.05.
(a) What is the point estimate of the proportion?
The point estimate of the proportion that fell short of estimates is 39/162 = 0.2407. Rounded to four decimal places, this is pshort = 0.2407.
(b) How to determine the margin of error and provide a 95% confidence interval for the proportion that beat estimates?
To determine the margin of error and provide a 95% confidence interval for the proportion that beat estimates, we need to first find the point estimate and standard error of the proportion that beat estimates.
The point estimate of the proportion that beat estimates is 94/162 = 0.5802.
The standard error can be calculated as:
SE = √(p×(1-p)/n)
where p is the point estimate of the proportion that beat estimates and n is the sample size. Substituting the values we get:
SE = √(0.5802×(1-0.5802)/162) = 0.0482
To calculate the margin of error, we use the formula:
ME = zSE
where z is the z-score corresponding to the desired confidence level. For a 95% confidence level, z* = 1.96 (from the standard normal distribution table).
Substituting the values we get:
ME = 1.96×0.0482 = 0.0944
Therefore, the margin of error is 0.0944. To find the 95% confidence interval, we add and subtract the margin of error from the point estimate of the proportion that beat estimates:
CI = 0.5802 ± 0.0944
CI = (0.4858, 0.6746)
Therefore, the 95% confidence interval for the proportion that beat estimates is (0.4858, 0.6746).
(c) How large a sample is needed if the desired margin of error is 0.05?
To find the sample size needed for a desired margin of error of 0.05, we use the formula:
n* = (z*/ME)² × p×(1-p)
where z* is the z-score corresponding to the desired confidence level (we use 1.96 for a 95% confidence level), ME is the desired margin of error (0.05), and p is an estimate of the proportion (we use the point estimate of 0.5802 for the proportion that beat estimates).
Substituting the values we get:
n* = (1.96/0.05)² × 0.5802×(1-0.5802) = 753.16
Rounding up to the next integer, we get n* = 754. Therefore, a sample size of 754 is needed to achieve a desired margin of error of 0.05.
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What is the simplest form of the expression? 6x - 4y - 2x /2
The simplest form of the expression 6x - 4y - 2x / 2 is 5x - 4y.
What is Simplest form?
In mathematics, simplest form refers to the expression that has been simplified or reduced as much as possible. This means that no further simplification or reduction can be done without changing the value of the expression.
The expression 6x - 4y - 2x / 2 can be simplified using the order of operations (PEMDAS) as follows:
6x - 4y - 2x / 2
= 6x - 4y - x (since 2x / 2 = x)
= 5x - 4y
Therefore, the simplest form of the expression 6x - 4y - 2x / 2 is 5x - 4y.
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suppose mapping f : Z->Z is defined as f(x)=x^2 (Z denotes the set of integers). Show that f is a function
Trigonometry Question
Answer: To show that the equation "3sin () tan () = 5cos () - 2" is equivalent to the equation "(4 cos() - 3)(2 cos () + 1) = 0", we need to simplify the first equation and check if it has the same solutions as the second equation.
Starting with the first equation:
3sin () tan () = 5cos () - 2
Using the identity tan () = sin () / cos (), we can write:
3sin () (sin () / cos ()) = 5cos () - 2
Multiplying both sides by cos (), we get:
3sin^2 () = (5cos () - 2)cos ()
Using the identity sin^2 () + cos^2 () = 1 and rearranging, we get:
3(1 - cos^2 ()) = 5cos^2 () - 2cos ()
Expanding and rearranging, we get:
5cos^2 () - 2cos () - 3 + 3cos^2 () = 0
Simplifying, we get:
8cos^2 () - 2cos () - 3 = 0
Now, we can use the quadratic formula to solve for cos ():
cos () = [2 ± sqrt(2^2 - 4(8)(-3))]/(2(8))
cos () = [2 ± sqrt(100)]/16
cos () = (1/4) or (-3/8)
Substituting these values back into the original equation, we can verify that they satisfy the equation.
Now, let's consider the second equation:
(4 cos() - 3)(2 cos () + 1) = 0
This equation is satisfied when either 4cos() - 3 = 0 or 2cos() + 1 = 0.
Solving for cos() in the first equation, we get:
4cos() - 3 = 0
cos() = 3/4
Substituting this value back into the original equation, we can verify that it satisfies the equation.
Solving for cos() in the second equation, we get:
2cos() + 1 = 0
cos() = -1/2
Substituting this value back into the original equation, we can also verify that it satisfies the equation.
Therefore, we have shown that the equation "3sin () tan () = 5cos () - 2" is equivalent to the equation "(4 cos() - 3)(2 cos () + 1) = 0".
30% of 26.5 is what number?
Answer:
7.95
Step-by-step explanation:
We can work percentage problems using the formula
P%x = y, where P is the percentage, x is the "of" value in the problem, and y is the "is" value in the problem.
First, we must convert the percentage to decimal form for an easier problem We can either dividing the percentage by 100 since a percentage is always out of 100 (e.g., 30 / 100 = 0.30) Or we can imagine the percentage sign as a decimal and move it over two places to the right (30% = 30.00 = 0.30)Thus, in the formula, our p value is 0.30, our x ("of") value is 26.5 and we're trying to find our y ("is") value:
0.30 * 26.5 = y
7.95 = y
Therefore, 30% of 26.5 is 7.95
2. A life insurance company will pay out $30,000 if a client dies, $10,000 if they are disabled, and $0 otherwise. The company's databases suggest that 1 out of 1,000 of its clients will die and 1 out of 250 of its clients will become disabled within the next year. To figure out how much to charge customers for each policy, they must figure out how much money they expect to lose per policy. Find the mean and standard deviation of the amount of money the insurance company can expect to lose on each policy.
The mean amount of money the insurance company can expect to lose on each policy is $142.00 with a standard deviation of $1,243.67.
What is an insurance?
Let X be the random variable representing the amount of money the insurance company will lose on a policy. Then we can calculate the expected value (mean) of X and the standard deviation of X as follows:
Expected value:
E(X) = 30,000(1/1,000) + 10,000(1/250) + 0(1 - 1/1,000 - 1/250) = $142.00
The first term in the sum corresponds to the probability of a client dying (1/1,000) multiplied by the payout ($30,000), the second term corresponds to the probability of a client becoming disabled (1/250) multiplied by the payout ($10,000), and the third term corresponds to the probability of neither event occurring (1 - 1/1,000 - 1/250).
Standard deviation:
To calculate the standard deviation, we need to find the variance of X first:
Var(X) = [30,000 - E(X)]²(1/1,000) + [10,000 - E(X)]²(1/250) + [0 - E(X)]²(1 - 1/1,000 - 1/250)
= $1,547,797.56
The first term in the sum corresponds to the squared difference between the payout for a client dying and the expected payout, multiplied by the probability of a client dying, and so on for the second and third terms.
Then, we can take the square root of the variance to find the standard deviation:
SD(X) = √[Var(X)] = $1,243.67
Therefore, the mean amount of money the insurance company can expect to lose on each policy is $142.00 with a standard deviation of $1,243.67.
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A window is 8 2/3 feet wide and 5 3/4 feet high what is the area of the window
Answer:
I worked this out & I got a horribly messy number, but if you still want it, here you go.
The answer I got is 49.833333333333333333333333333333, or
49 833333333333333333333333333333/100000000000000000000000000000.
I could not simplify it. Hopefully, your teacher accepts this.
let's firstly convert the mixed fractions to improper fractions, then multiply.
[tex]\stackrel{mixed}{8\frac{2}{3}}\implies \cfrac{8\cdot 3+2}{3}\implies \stackrel{improper}{\cfrac{26}{3}}~\hfill \stackrel{mixed}{5\frac{3}{4}} \implies \cfrac{5\cdot 4+3}{4} \implies \stackrel{improper}{\cfrac{23}{4}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{26}{3}\cdot \cfrac{23}{4}\implies \cfrac{26}{4}\cdot \cfrac{23}{3}\implies \cfrac{13}{2}\cdot \cfrac{23}{3}\implies \cfrac{299}{6}\implies 49\frac{5}{6}~ft^2[/tex]
Evaluate the integral by changing to spherical coordinates:
The value of evaluating the integral expression [tex]\int\limits^a_{-a} \int\limits^{\sqrt{a^2 - y^2}}_{-\sqrt{a^2 - y^2}} \int\limits^{\sqrt{a^2 -x^2 - y^2}}_{-\sqrt{a^2 - x^2 - y^2}} (x^2z + y^2z + z^3) dz dx dy[/tex] is 0
Evaluating the integral using spherical coordinatesGiven that
[tex]\int\limits^a_{-a} \int\limits^{\sqrt{a^2 - y^2}}_{-\sqrt{a^2 - y^2}} \int\limits^{\sqrt{a^2 -x^2 - y^2}}_{-\sqrt{a^2 - x^2 - y^2}} (x^2z + y^2z + z^3) dz dx dy[/tex]
To change to spherical coordinates, we need to express x, y, and z in terms of spherical coordinates: r, θ, and Φ .
In particular, we have
[tex]x &= r \sin\phi \cos\theta, \\y &= r \sin\phi \sin\theta, \\z &= r \cos\phi[/tex]
The Jacobian for the transformation is r² sin(Φ), and the limits of integration become
[tex]-a &\leq x \leq a \quad \Rightarrow \quad 0 \leq r \leq a, \\-\sqrt{a^2 - y^2} &\leq y \leq \sqrt{a^2 - y^2} \quad \Rightarrow \quad 0 \leq \phi \leq \frac{\pi}{2}, \\-\sqrt{a^2 - x^2 - y^2} &\leq z \leq \sqrt{a^2 - x^2 - y^2} \quad \Rightarrow \quad 0 \leq \theta \leq 2\pi.[/tex]
Substituting into the integral, we have
[tex]&\int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} (r^2\sin^2\phi\cos\theta\cdot r\cos\phi + r^2\sin^2\phi\sin\theta\cdot r\cos\phi + r^3\cos^3\phi) r^2 \sin\phi,d\theta d\phi dr \[/tex]
[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} (r^3\sin^2\phi\cos\theta\cos\phi + r^3\sin^2\phi\sin\theta\cos\phi + r^3\cos^3\phi) \sin\phi, d\theta d\phi dr[/tex]
[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} r^3\sin\phi\cos\phi (\sin^2\phi\cos\theta + \sin^2\phi\sin\theta + \cos^2\phi) , d\theta d\phi dr \[/tex]
[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} r^3\sin\phi\cos\phi (\sin^2\phi + \cos^2\phi) , d\theta d\phi dr \[/tex]
[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} r^3\sin\phi\cos\phi, d\theta d\phi dr \[/tex]
[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} 0, d\theta d\phi dr \&\quad = 0[/tex]
Therefore, the value of the integral is 0.
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Given the function f(x) =3x^2-6x-9 is the point (1,-12) on the graph of f?
The point P ( 1 , -12 ) lies on the graph of the function f ( x ) = 3x² - 6x - 9
Given data ,
Let the function be represented as f ( x )
Now ,
Let the point be P ( 1 , -12 )
And , to determine if the point (1, -12) is on the graph of the function f(x) = 3x² - 6x - 9, we can substitute x = 1 and y = -12 into the equation and check if it satisfies the equation.
Plugging in x = 1 into the equation, we get:
f(1) = 3(1)² - 6(1) - 9
f(1) = 3 - 6 - 9
f(1) = -12
Hence , when x = 1, f(x) = -12. Since f(1) = -12 and the given point is (1, -12), the point (1, -12) does lie on the graph of the function f(x) = 3x² - 6x - 9
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Which is an asymptote of the function h(x) = 9^x?
Answer:
The asymptote is 0.
Step-by-step explanation:
In [tex]f(x)=a^x+b[/tex], b is the asymptote.
Answer:
it's 0
Step-by-step explanation:
find the work done of a moving particle in the surface center c(0,0,3) of radiu r=5, on the plane z=3 if the force field F = (2x +y_2Z)i + (2x_4y+Z)j (x-2y-Z²) k
Answer:
75 - 25π.
Step-by-step explanation:
To find the work done by a force field on a particle moving along a curve, we use the line integral of the force field over that curve.
In this case, the curve is a circle of radius 5 centered at (0, 0, 3) lying on the plane z = 3. We can parameterize this curve using polar coordinates as:
r(t) = (5cos(t), 5sin(t), 3), where t goes from 0 to 2π.
The differential of the curve, dr(t), is given by:
dr(t) = (-5sin(t), 5cos(t), 0) dt
Now we need to calculate the work done by the force field F along this curve. The line integral of F over the curve is given by:
W = ∫ F · dr = ∫ (2x +y²Z)dx + (2x-4y+Z)dy + (x-2y-Z²)dz
Substituting x = 5cos(t), y = 5sin(t), and z = 3, we get:
W = ∫ (10cos(t) + 25sin²(t)·3) (-5sin(t))dt
∫ (10cos(t) - 20sin(t) + 3) (5cos(t))dt
∫ (5cos(t) - 10sin(t) - 9) (0)dt
Simplifying, we get:
W = -75∫sin(t)cos(t)dt + 50∫cos²(t)dt + 0
Using the trigonometric identities sin(2t) = 2sin(t)cos(t) and cos²(t) = (1 + cos(2t))/2, we can simplify this further:
W = -75∫(1/2)sin(2t)dt + 25∫(1 + cos(2t))dt
= -75·(1/2)·(-cos(2t))∣₀^(2π) + 25·(t + (1/2)sin(2t))∣₀^(2π)
= 75 - 25π
Therefore, the work done by the force field F on the particle moving along the circle of radius 5 centered at (0, 0, 3) lying on the plane z = 3 is 75 - 25π.
Using the graphs below, identify the constant of proportionality
The constant of proportionality for the graph given can be found to be 2 / 3.
How to find the constant of proportionality ?A fixed numerical quantity that links two variables exhibiting direct proportionality is referred to as the constant of proportionality. This implies that when two factors are directly proportional, a stable ratio exists between them. The same value defines this figure and is identified as the constant of proportionality.
Pick a point on the graph such as ( 3 , 2 ) and ( 6, 4 ), the constant of proportionality would be:
= Change in y / Change in x
= ( 4 - 2) / ( 6 - 3 )
= 2 / 3
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A particle moves along the x-axis so that at any time t >= 0 its position is given by x(t)= 1/2(a - t)^2, where a is a positive constant. For what values of t is the particle moving to the right?
If will be positive if:
-24(a-t) > 0
-(a-t) > 0
-a + t > 0
t > a
How to solveUsing derivatives, it is found that the particle is moving to the right for t > a , that is, values of t in the interval (a, ∞)
A particle is moving to the right if its velocity is positive.
The position of the particle is given by:
x(t) = 12(a -t)^2
The velocity is the derivative of the position, hence:
v(t) = -24(a-t)
If will be positive if:
-24(a-t) > 0
-(a-t) > 0
-a + t > 0
t > a
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csc²x+cot²x/csc⁴x-cot⁴x=1
By putting the value it proved that csc²x+cot²x/csc⁴x-cot⁴x=1
What is Trigonometry mean ?Trigonometry is a branch of mathematics that studies relationships between the sides and angles of triangles. Trigonometry is found all throughout geometry, as every straight-sided shape may be broken into as a collection of triangles.There are six type of Trigonometry
According to question,
we have prove that
(csc²x + cot²x) / (csc⁴x - cot⁴x) = 1
Now by manipulating the left-hand side of the equation using trigonometric identities.
Then, we can simplify the denominator using the identity:
a² - b² = (a + b)(a - b)
In this case we get , a = csc²x and b = cot²x, so:
csc⁴x - cot⁴x = (csc²x + cot²x)(csc²x - cot²x)
By substituting this expression into the given equation, we get:
(csc²x + cot²x) / [(csc²x + cot²x)(csc²x - cot²x)] = 1
By solving the numerator, we get:
1 / (csc²x - cot²x) = 1
Now, we can use the identity:
csc²x - cot²x = 1 / sin²x - cos²x / sin²x
= (1 - cos²x) / sin²x
= sin²x / sin²x
= 1
Substituting this expression back into the equation, we get:
1 / 1 = 1
Hence, we have proved that:
(csc²x + cot²x) / (csc⁴x - cot⁴x) = 1.
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Can’t solve this please help urgent.
The value of the derivative of variable x with respect to parameter t is equal to dx / dt = - 1 / 2.
How to find the derivative of a parametric function
In this problem we need to find the derivative of variable x with respect to parameter t. This can be done by the following expression:
dy / dx = (dy / dt) / (dx / dt)
If we know that y = 4 · x² + 4, x = - 1 and dy / dt = 4, then the exact value of dy / dt is:
dy / dx = 8 · x
[8 · (- 1)] = 4 / (dx / dt)
- 8 = 4 / (dx / dt)
dx / dt = - 1 / 2
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What shapes can be a cross section of a rectangular prism
The shape that would be seen if you were to take a cross-section parallel to the base of a rectangular prism is a RECTANGLE.
Here, we have,
we know that,
A regular prism is a base with a regular polygon, whereas a prism whose base is an irregular polygon is called an irregular prism.
so, we have,
This is because the cross-section of a rectangular prism will always be a rectangle.
The definition of a prism is that the cross-section parallel to the base will be uniform.
Hence, The shape that would be seen if you were to take a cross-section parallel to the base of a rectangular prism is a RECTANGLE.
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The skid marks for a car involved in an accident measured 150ft. Use the formula s=24d−−−√ to find the speed s, in feet per second, of the car before the brakes were applied.
The speed s, in feet per second, of the car before the brakes were applied is,
⇒ s = 67.5 m/s
What is Multiplication?To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
Given that;
Skid mark for the car = 150 ft
And, given equation of speed and distance is,
⇒ s = √24d
Where, d is the distance
And, s is the speed
Hence, We get;
s = √ 24 × 150
s = √3600
s = 60 m/s
Thus, The speed of the car before it stop is equal to s = 60 m/s
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A set of data items is normally distributed with a mean of 600 and a standard deviation of 30. Find the data item in this distribution that corresponds
to the given z-score.
Z=-3
The data item that corresponds to z= -3 is
s(Type an integer or a decimal.)
The data item in this distribution corresponding to a z-score of -7 will be 290.
Here, we have,
The standard score in statistics is the number of standard deviations that a raw score's value is above or below the mean value of what is being observed or measured.
Raw scores that are higher than the mean have positive standard scores, whereas those that are lower than the mean have negative standard scores.
The Z-score measures how much a particular value deviates from the standard deviation.
The Z-score, also known as the standard score, is the number of standard deviations above or below the mean for a given data point.
The standard deviation reflects the level of variability within a particular data collection.
Here,
z=(X-μ)/σ
-7=(X-500)/30
-210=X-500
X=290
The data item in this distribution that corresponds to we given z-score
z equals to -7 will be 290.
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Which is an equation that shifts the graph of the function f(x) = √x to the left 5 units?
An equation that shifts the graph of the function f(x) = √x to the left 5 units is: f(x) = √(x + 5)
What is the equation after the function transformation?There are different methods of transformation of functions or graphs and they are:
1) Translation
2) Reflection
3) Dilation
4) Rotation
Now, we can shift a function upwards, downwards, to the left or right as the case may be.
In this case we want to shift the function to the left by 5 units.
Shifting the function 5 units to the left means translating the function 5 units along the x-axis. So we will add 5 to x to get:
f(x) = √(x + 5)
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There are four boards measuring 3 feet 4 inches, 27 inches, 1 1/2 yards, and 2 3/4 feet. What is the total length of all four boards?
On adding the measurement of "4-boards", the total length of the 'four-boards" is 154 inches.
In order to add the lengths of these four boards, we first need to convert all the measurements to the same units.
So, Let us convert all the measurements to inches:
(i) 3 feet 4 inches = (3×12) + 4 = 40 inches, ...because 1 feet = 12 inch;
(ii) 27 inches = 27 inches;
(iii) 1(1/2) yards = (1.5 × 3 × 12) = 54 inches;
(iv) 2(3/4) feet = (2.75 × 12) = 33 inches;
Now, we can add the lengths of the four-boards:
⇒ 40 + 27 + 54 + 33 = 154 inches,
Therefore, the total length of all four boards is 154 inches.
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Adding measurements in feet and inches, please help ):
The total width for the figure is given as follows:
13 ft 2 in.
How to obtain the total width?The total width for the figure is obtained applying the proportions in the context of the problem.
The measures are given as follows:
3 feet and 11 inches.4 feet and 5 inches.4 feet and 10 inches.The sum of the measures is given as follows:
3 + 4 + 4 = 11 feet.11 + 5 + 10 = 26 inches.Each feet is composed by 12 inches, hence:
26 inches = 2 feet and 2 inches.
Hence the sum is given as follows:
11 + 2 = 13 feet and 2 inches.
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plsss help asp giving out brainiest for best one
The measure of m(ZR) would be 145°.
What is secant ?In geometry, a secant is a straight line that intersects a curve at two or more points. A secant line is used to study the properties of the curve such as its slope, curvature, and points of intersection with other curves. In the context of circles, a secant is a line that intersects a circle at two points, creating a chord. A secant is different from a tangent, which is a line that intersects a curve or circle at only one point and is perpendicular to the curve at that point.
Now we know that if Two secants intersect inside the circle.
Then according a property of intersecting chords.
m(ZR) - m(KV) = 2 (30°)
(5x+10)° - (3x+4)° = 60°
(5x+10° - 3x - 4°)= 60°
2x+6°= 60°
2x = 60° - 6°
2x = 54°
x = 27°
Now put the value in m(ZR)
m(ZR) = (5x27+10)°
m(ZR) = 145°
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angles of a triangle
Answer:
x=70°
Step-by-step explanation:
angles on straight line add to 180 so...
180-120=60°
angles in triangle add to 180° so...
180°-50°-60°=70°
so x=70°
simplify the expression using distributive property 5(3g - 5h)
(Also if it says college Its not, I had set it to middle but it changed)
Answer: 15g-25h
Step-by-step explanation:
To use distributive property, you multiply 5x3g individually, and then 5x-5h individually.
You then add them.
So:
5(3g-5h)
=15h-25j
TOPIC 1 ANGLES AND TRIANGLES
SKILLS PRACTICE continued
PROBLEM SET 2: Classifying Angles
> Identify each pair of angles as complementary, supplementary, or vertical angles.
Each pair of angles has been identified as adjacent, complementary, supplementary, or vertical angles as shown in the image attached below.
What is a complementary angle?In Mathematics and Geometry, a complementary angle can be defined as two (2) angles or arc whose sum is equal to 90 degrees (90°);
55 + 35 = 90°
What are adjacent angles?In Mathematics and Geometry, adjacent angles can be defined as two (2) angles that share a common vertex and a common side. This ultimately implies that, both angles 1 and 2, 5 and 6, 9 and 10 are pair of adjacent angles.
In conclusion, the linear pair theorem is sometimes referred to as linear pair postulate (supplementary angle) and it states that the measure of two angles would add up to 180° provided that they both form a linear pair.
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Create a list of steps, in order, that will solve the following equation.
(x - 5)² = 25
Solution steps:
Add 5 to both sides
Multiply both sides by 5
Square both sides
Take the square root of both
sides
The solutions to the equation (x - 5)² = 25 are x = 10 and x = 0.
Define equation?An equation is a mathematical statement that shows that two expressions are equal. It consists of two sides separated by an equal sign (=). Each side of the equation can contain variables, constants, and mathematical operations such as addition, subtraction, multiplication, and division.
What is Square?It is a shape with four sides of equal length and four right angles. It is also a number multiplied by itself.
Solve the equation (x - 5)² = 25:
1. Take the square root of both sides of the equation to remove the exponent of 2 on the left side.
√[(x - 5)²] = √25
2. Simplify the left side by removing the exponent of 2 and keeping the absolute value.
|x - 5| = 5
3. Write two separate equations to account for both possible values of x when taking the absolute value.
x - 5 = 5 or x - 5 = -5
4. Solve for x in each equation.
x = 10 or x = 0
So the solutions to the equation (x - 5)² = 25 are x = 10 and x = 0.
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A rectangle's length is twice as long as it is wide. If the length is doubled and its breadth
is halved, the new rectangle will have a perimeter of 12 m longer than the original
rectangle's perimeter.
What are the dimensions of these rectangles?
A standard deck of 52 cards has 4 suits: clubs, spades, hearts, and diamonds. Each suit has number cards 2 through 10, a jack, a queen, a king, and an ace. The jack, queen, and king are considered "face cards".
What is the probability of drawing one card from a standard deck of cards and choosing a "face card"?
A. 1/3
B. 3/52
C. 1/4
D. 3/13
The probability of drawing one card from a standard deck of cards and choosing a "face card" is 3/13.
What is probability?
Probability is a measure of the likelihood or chance of an event occurring, expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.
There are a total of 12 face cards in a standard deck of 52 cards (4 jacks, 4 queens, and 4 kings).
The probability of drawing a face card can be calculated by dividing the number of face cards by the total number of cards in the deck:
P(face card) = number of face cards / total number of cards
[tex]P(face \: card) = \frac{12}{52} \\ P(face \: card) = \frac{3}{13} [/tex]
Therefore, the probability is D. 3/13.
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Invent examples of data with
(a) SS(between) = 0 and SS(within) > 0
(b) SS(between) > 0 and SS(within) = 0
For each example, use three samples, each of size 5.
The sample of given data is Sample 1: 1, 2, 3, 4, 5 Sample 2: 6, 7, 8, 9, 10
b)Sample 1: 1, 2, 3, 4, 5 Sample 2: 6, 7, 8, 9, 10
(a) An example of data with SS(between) = 0 and SS(within) > 0 could be the following:
Sample 1: 1, 2, 3, 4, 5
Sample 2: 6, 7, 8, 9, 10
Sample 3: 11, 12, 13, 14, 15
In this example, the means of each sample are all different from each other, but the grand mean (8) is equal to the mean of each sample. Therefore, there is no variability between the means of the samples, resulting in SS(between) = 0. However, there is still variability within each sample, resulting in SS(within) > 0.
(b) An example of data with SS(between) > 0 and SS(within) = 0 could be the following:
Sample 1: 1, 2, 3, 4, 5
Sample 2: 6, 7, 8, 9, 10
Sample 3: 11, 12, 13, 14, 15
In this example, the means of each sample are all the same (8), but the values within each sample are all different from each other. Therefore, there is variability between the means of the samples, resulting in SS(between) > 0. However, there is no variability within each sample, resulting in SS(within) = 0.
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