Answer:
Total cost= 99 + 2.97x
Step-by-step explanation:
Giving the following information:
Fixed cost= $99
Variable cost= 3% per person
First, we need to calculate the 3% of 99:
Unitary variable cost= 99*0.03= $2.97
Now, we establish the total cost structure:
Total cost= 99 + 2.97x
x= number of people in attendance
Finally, suppose 200 people attend the party:
Total cost= 99 + 2.97*200
Total cost= $693
1. GASOLINE The table gives the cost of a gallon of gasoline at two stations. How much more does gasoline cost at Gas For Less than at Cut-Rate? Cut-Rate 2.x + 3.5 Gas for less V12
Answer:
GASOLINE The table gives the cost of a
gallon of gasoline at two stations.
How much more does gasoline cost at
Gas For Less than at Cut-Rate?
Step-by-step explanation:
Computer world has all computer has all computers on sale for 20% off. If the regular price of a laptop is $750, what is the sale price?
Answer:
Selling price of the laptop is $600.
Step-by-step explanation:
Let the sale price of the laptop = $x
Regular price of the laptop = $750
Discount on each computer = 20%
Selling price of the laptop 'x' = 750 - (20% of 750)
= 750 - [tex](\frac{20}{100}\times 750)[/tex]
= 750 - 150
= $600
Therefore, selling price of the laptop is $600.
Which of the following sets of vectors in R3 are linearly de- pendent? (a) (4, -1,2). (-4, 10, 2) (b) (-3.0.4). (5. -1,2), (1,1.3) (c) (8,-1,3), (4,0,1) (d) (-2, 0, 1), (3, 2, 5), (6.-1.1), (7,0, -2) 11 ofrector in p4 are linear de
The set of vectors (b) (-3,0,4), (5,-1,2), (1,1,3) are linearly dependent. The other given sets of vectors in R3 are linearly independent.
Let's review the given sets of vectors in R₃ to determine which ones are linearly dependent.
(a) (4.-1,2), (-4, 10, 2).
To check if the given set is linearly dependent or not, we need to check whether there are non-zero scalars such that their linear combination is equal to
0.a(4,-1,2) + b(-4,10,2) = (0,0,0).
The system of equations can be written as;
4a - 4b = 0-1a + 10b = 00a + 2b = 0.
Clearly, a = b = 0 is the only solution.
So, the set is linearly independent.
(b) (-3,0,4), (5,-1,2), (1, 1,3)
To check if the given set is linearly dependent or not, we need to check whether there are non-zero scalars such that their linear combination is equal to
0.a(-3,0,4) + b(5,-1,2) + c(1,1,3) = (0,0,0).
The system of equations can be written as;
-3a + 5b + c = 00a - b + c = 00a + 2b + 3c = 0
Clearly, a = 2, b = 1, and c = -2 is a solution.
So, the set is linearly dependent.
(c) (8.-1.3). (4,0,1).
To check if the given set is linearly dependent or not, we need to check whether there are non-zero scalars such that their linear combination is equal to
0.a(8,-1,3) + b(4,0,1) = (0,0,0).
The system of equations can be written as;
8a + 4b = 01a + 0b = 0-3a + b = 0.
Clearly, a = b = 0 is the only solution.
So, the set is linearly independent.
(d) (-2.0, 1), (3, 2, 5), (6,-1, 1), (7,0.-2).
To check if the given set is linearly dependent or not, we need to check whether there are non-zero scalars such that their linear combination is equal to
0.a(-2,0,1) + b(3,2,5) + c(6,-1,1) + d(7,0,-2) = (0,0,0)
The system of equations can be written as;
-2a + 3b + 6c + 7d = 00a + 2b - c = 00a + 5b + c - 2d = 0
Clearly, a = b = c = d = 0 is the only solution.
So, the set is linearly independent.
Therefore, The set of vectors (b) (-3,0,4), (5,-1,2), (1,1,3) are linearly dependent. The other given sets of vectors in R₃ are linearly independent.
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Given the joint density f(x, y) = 1 for -y < x < y and 0 < y < 1, or 0 elsewhere, show that the random variables X and Y are uncorrelated but not independent.
The joint density f(x, y) = 1 for -y < x < y and 0 < y < 1, or 0 elsewhere, the variables X and Y are uncorrelated but not independent.
The problem requires the determination of whether the random variables X and Y are independent and uncorrelated. For that, the expectation of the product of X and Y is needed. Evaluating E(XY). For the two variables X and Y, their joint density is given as:
f(x, y) = 1 for -y < x < y and 0 < y < 1, or 0 elsewhere
To evaluate the expectation of XY, multiply the variables X and Y as follows: E(XY) = ∫∫xy f(x,y) dy dx.
We evaluate the above equation over the range of the variables.
Since the domain of the density function is given by -y < x < y and 0 < y < 1, E(XY) = ∫∫xy f(x,y) dy dx = ∫0¹ ∫-[tex]y^{y}[/tex] xy dy dx
The above equation can be simplified as:
E(XY) = ∫0¹ (1/3)*y³ dy = 1/12
Hence the covariance between X and Y is given by: Cov (X, Y) = E(XY) - E(X)E(Y) = E(XY) = 1/12.
The variance of X is calculated as follows: E(X) = ∫∫xf(x, y) dy dx
For the two variables X and Y, their joint density is given as: f(x, y) = 1 for -y < x < y and 0 < y < 1, or 0 elsewhere.
Thus, E(X) = ∫∫x f(x, y) dy dx= ∫0¹ ∫-[tex]y^{y}[/tex] x dy dx= 0.
Hence, Var(X) = E(X²) - [E(X)]² = E(X²) - 0² = E(X²).
The variance of X² is calculated as follows:
E(X²) = ∫∫x² f(x, y) dy dx. For the two variables X and Y, their joint density is given as: f(x, y) = 1 for -y < x < y and 0 < y < 1, or 0 elsewhere.
Thus, E(X²) = ∫∫x² f(x, y) dy dx= ∫0¹ ∫-[tex]y^{y}[/tex] x² dy dx= 1/3
Hence, Var(X) = E(X²) - [E(X)] ² = 1/3 - 0 = 1/3
The variance of Y² is calculated as follows: E(Y²) = ∫∫y² f(x, y) dy dx
For the two variables X and Y, their joint density is given as: f(x, y) = 1 for -y < x < y and 0 < y < 1, or 0 elsewhere. Thus, E(Y²) = ∫∫y² f(x, y) dy dx= ∫0¹ ∫-[tex]y^{y}[/tex]y² dy dx= 1/3
Hence Var(Y) = E(Y²) - [E(Y)]² = 1/3 - [E(Y)]²
The covariance between X and Y is given by: Cov (X, Y) = E(XY) - E(X)E(Y) = 1/12 - 0 = 1/12.
We can evaluate the correlation between X and Y as: Corr (X, Y) = Cov (X, Y) / √Var (X) Var(Y)= (1/12) / [(1/3) * (1/3)] = 1/4
Thus, the variables X and Y are uncorrelated but not independent.
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PROVING THEOREMS OF SQUAD can someone help me pleasee ASAP
Answer:
40 units
Step-by-step explanation:
For a square, all the sides are equal and the interior angles are equal and all equal to 90. Hence;
m<BOJ = 90 degrees
m<BOJ = 4x - 6
Equating both to get x;
4x - 6 = 90
4x = 90+6
4x = 96
x = 96/4
x = 24
Since all the sides are equal, hence BO = JO = 2x-8
JO = 2x - 8
Substitute x = 24 into JO
JO = 2(24) - 8
JO = 48 - 8
JO = 40
Hence the measure of JO is 40 units
Let f(t) be the number of units produced by a company t years after opening in 2005. what is the correct interpretation of f(6) = 44,500?
a. six years from now, 44500 units will be produced
b. in 2009, 44500 units are produced
c. in 2006, 44500 units are produced
d. in 2011, 44500 units are produced
The correct interpretation of `f(6) = 44,500` is that in the year 2011, a company that opened in 2005 will produce 44,500 units of products is the answer.
Given, `f(t)` be the number of units produced by a company `t` years after opening in 2005.
According to the question, `f(6) = 44,500`. It means six years after the company opened, which is in the year 2011, the company will produce 44,500 units of products.
The statement "six years from now, 44,500 units will be produced" (option a) is not correct because the year is not specified. The company will produce 44,500 units of products in the year 2011, not six years from the present.
The statement "in 2009, 44,500 units are produced" (option b) is not correct because in the year 2009, the company will only have been open for four years, and not enough information is provided to calculate the number of units produced.
The statement "in 2006, 44,500 units are produced" (option c) is not correct because in the year 2006, the company will have only been open for one year, and not enough information is provided to calculate the number of units produced.
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Joseph orders some pizza for himself and his friends. The cost of each pizza is £12.50, and the delivery charge is £1.50. If Joseph orders 11 pizzas, how much does Joseph pay in total?
Answer:
£139
Step-by-step explanation:
£12.50 * 11 = 137.50
137.50 + 1.50 = £139
Answer:
137.5 + 1.50 = £139
Step-by-step explanation:
Please Give brainliest
In physics, we can find the amount of force needed to push or pull an object by multiplying the object’s mass by the object’s acceleration. The units of force are called Newtons.
force = mass × acceleration
F = ma
Find the amount of force it takes to push Jeff’s race car if the mass of the race car is 750 kg and the acceleration is 2.5 StartFraction m Over s squared EndFraction
The amount of force needed to push Jeff’s race car is
Newtons.
ALSO I DONT KNOW IF THIS IS MATH OR SCIENCE SO IMA PUT IT AS MATH
Answer:
1875
Step-by-step explanation:
750 x 2.5 = 1,875
Add f(x)=2x^3 and g(x) = log(x+4) + 100
The sum of the given function is 2x^3 + log(x+4) + 100
Sum of functionsGiven the following functions
f(x)=2x^3 and;
g(x) = log(x+4) + 100
Take the sum of the functions
f(x) + g(x) = 2x^3 + log(x+4) + 100
Hence the sum of the given function is 2x^3 + log(x+4) + 100
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(x2-1)dy/dx+2y=(x+1)4 (integrating factor)
The integrating factor for the given differential equation is |x^2 - 1|.
To find the integrating factor for the given differential equation, we start by rearranging the equation in the form:
dy/dx + (2y)/(x^2 - 1) = (4(x + 1))/(x^2 - 1)
The integrating factor (IF) is given by the exponential of the integral of the coefficient of y, which in this case is (2/(x^2 - 1)). Therefore, the integrating factor IF is:
IF = exp ∫ (2/(x^2 - 1)) dx
To evaluate this integral, we can use a substitution. Let u = x^2 - 1, then du = 2x dx. Substituting this back into the integral, we get:
IF = exp ∫ (1/u) du = exp(ln|u|) = |u|
Since u = x^2 - 1, we have:
IF = |x^2 - 1|
Therefore, the integrating factor for the given differential equation is |x^2 - 1|.
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Pleaseee help!!!!!!!!!
The mass of a species of mouse commonly found in houses is normally distributed with a mean of 20.8 grams with a standard deviation of 0.17 grams. For parts (a) through (c), enter your responses as a decimal with 4 decimal places. a) What is the probability that a randomly chosen mouse has a mass of less than 20.7 grams? b) What is the probability that a randomly chosen mouse has a mass of more than 21.02 grams? c What proportion of mice have a mass between 20.65 and 20.95 grams? d) 10% of all mice have a mass of less than grams.
a. Using the z-score, the probability of a randomly chosen mouse having a mass of less than 20.7 grams is approximately 0.2794.
b. The probability that a randomly chosen mouse has a mass more than 21.02g is 0.0985
c. The probability of a mouse having a mass between 20.65 and 20.95 grams is approximately 0.6474.
d. About 10% of all mice have a mass of less than 20.5649 grams.
What is the probability that a randomly chosen mouse has a mass of less than 20.7g?a) To find the probability that a randomly chosen mouse has a mass of less than 20.7 grams, we can use the normal distribution.
First, we need to standardize the value of 20.7 grams using the formula: z = (x - μ) / σ, where x is the value, μ is the mean, and σ is the standard deviation.
The z-score for the data is;
z = (20.7 - 20.8) / 0.17 = -0.5882
P = 0.2794
b) To find the probability that a randomly chosen mouse has a mass of more than 21.02 grams, we also need to standardize the value:
z = (21.02 - 20.8) / 0.17 = 1.2941
P = 0.0985
Using the standard normal distribution table or a calculator, we find that the probability corresponding to this z-value is approximately 0.0985.
c) To find the proportion of mice that have a mass between 20.65 and 20.95 grams, we can standardize both values:
For 20.65 grams:
z₁ = (20.65 - 20.8) / 0.17 = -0.8824
For 20.95 grams:
z₂ = (20.95 - 20.8) / 0.17 = 0.8824
Using the standard normal distribution table or a calculator, we can find the probabilities corresponding to these z-values. The probability of a mouse having a mass between 20.65 and 20.95 grams is approximately 0.6474.
d) To find the mass of mice that corresponds to the 10th percentile, we need to find the z-score associated with the 10th percentile. We can use the standard normal distribution table or a calculator to find this value.
The z-score associated with the 10th percentile is approximately -1.2816.
Next, we can use the z-score formula to find the corresponding mass value:
z = (x - μ) / σ
-1.2816 = (x - 20.8) / 0.17
Solving for x, we get:
x = -1.2816 * 0.17 + 20.8 ≈ 20.5649 grams
Therefore, 10% of all mice have a mass of less than 20.5649 grams.
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What is the midpoint of line segment RS with endpoints R(5, -10) and S(3, 6)?
Answer:
(4, -2)
Step-by-step explanation:
The midpoint of two points is found by averaging the X coordinates and averaging the Y coordinates to create a new pair.
X: (5+3)/2 = 4
Y: (-10+6)/2 = -2
Answer:
(4,-2)
Step-by-step explanation:
add the x and divide by two. do the same with the y. this is the same as finding the average
2) The equation y = 18x represents the relationship between 2, the number of hours biked, and
y, the distance traveled,
Which ordered pairs represent a number of hours and the corresponding
distance in the given equation? Choose ALL that apply.
(2,36)
(3,54)
(5,23)
(23,5)
(36,2)
(54,3)
Answer:(2,36)and (3,54)
Step-by-step explanation:
Answer:
(2, 36) and (3, 54)
Step-by-step explanation:
I just answer the question from iready and I got it correct.
Which of the following expressions represents the solution to x – 3 > -4?
a. x > -7
b. x > -1
c. x < 12
d. x > 12
Step-by-step explanation:
x - 3 > -4
= x > -4+3
= x > -1 _ Answer
Using the order of operations, what should be done first when evaluating this expression?
Negative one-half divided by 2 (9 + 3) minus 4 minus three-fourths (8)
Divide Negative one-half divided by 2.
Add 9 + 3.
Multiply Negative three-fourths (8).
Subtract 3 minus 4.
Answer:
You add (9+3)
Step-by-step explanation:
because PEMDAS evaluates the parenthesis first,
Answer:
It' B
Step-by-step explanation:
I got a 100 on the test
Can someone help me with this. Will Mark brainliest. Need answer and explanation/work. Thank you.
Answer:
[tex]14/50\\[/tex]
Step-by-step explanation:
The equation for sine is sine = opposite/ hypotenuse
The opposite of W is 14 and the hypotenuse the the side across the 90° angle, which is 50.
So, when you set up the equation it should be [tex]14/50[/tex].
This is the equation: f(x)=x^2
e) Is f(x) symmetric? If so, what is the equation of the line of symmetry?
f) Does f(x) have a maximum or minimum? If so, at what point?
g) What are the x-intercept(s) of f(x)?
Answer:
e) yes, symmetric around the y-axis
f) minimum at (0,0)
g) x-intercept at 0
Step-by-step explanation:
Ok So could you please tell me where I went wrong?
Answer:
lateral surface area =perimeter of base×height=
={4+7+7+11)×6=174 km²
Step-by-step explanation:
A rectangle has a width of 3 cam and a length of 9cm. the rectangle is to be enlarged by a scale factor of 8 what is the length of the enlargement. (include units)
Answer:
72 cm
Step-by-step explanation:
It would be multiplied by 8 so the length would become 72 cm
Help this is clever 8.4 I need this by 7
Answer:
Just do 8.4 times 7
Step-by-step explanation:
8.4 times 7 = 58.8
Which of the following distances is a circumference? a.the distance around the face of a cube. b.the distance around a text book. c.the distance around a nickel. d.the distance around one of the hawaiian islands.
Answer:
c
Step-by-step explanation:
circumference = perimeter around circle
Find the general solution of the following equation. Express the solution explicitly as a function of the independent variable.
x^2(dw/dx)=sqrt(w)(3x+2)
w(x)= ? (Use C as the arbitrary constant)
The general solution of the given equation, x^2(dw/dx) = sqrt(w)(3x+2), expressed explicitly as a function of the independent variable, is w(x) = (1/27)((9x^2 + 6x + C)^3), where C is an arbitrary constant.
To solve the given equation, we can separate the variables and integrate.
First, rewrite the equation as
(1/sqrt(w))dw = (3x+2)/x^2 dx.
Integrate both sides with respect to their respective variables:
∫(1/sqrt(w))dw = ∫(3x+2)/x^2 dx.
The integral of (1/sqrt(w)) with respect to w is 2√w, and the integral of (3x+2)/x^2 with respect to x can be found using partial fractions or another suitable method.
After integrating and simplifying, we obtain:
2√w = (1/27)(9x^2 + 6x + C),
where C is the arbitrary constant.
To find the explicit solution, isolate w by squaring both sides:
w(x) = (1/27)((9x^2 + 6x + C)^3),
where w(x) is the function expressing the solution explicitly in terms of the independent variable x, and C is the arbitrary constant.
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the ratio of the angle measures in a triangle is 2:3:10 . what is the measure of each angle?
The measure of each angle in the triangle is 24 degrees, 36 degrees, and 120 degrees.
Let's denote the three angles of the triangle as A, B, and C. According to the given ratio of 2:3:10, we can assign the values 2x, 3x, and 10x to angles A, B, and C, respectively, where x is a common factor.
The sum of the angle measures in a triangle is always 180 degrees. Therefore, we can set up the following equation:
2x + 3x + 10x = 180
Simplifying the equation, we get:
15x = 180
Dividing both sides by 15, we find:
x = 12
Now we can substitute x back into the expressions for each angle:
Angle A = 2x = 2(12) = 24 degrees
Angle B = 3x = 3(12) = 36 degrees
Angle C = 10x = 10(12) = 120 degrees
Therefore, the measure of each angle in the triangle is 24 degrees, 36 degrees, and 120 degrees.
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ANSWER ISN'T DECIMALS ANSWER ASAP!
Answer:
972 cubic feet
Step-by-step explanation:
12 by 9 by 7.5
+
1.5 by 9 by 12
Answer:
891 ft³
Step-by-step explanation:
First I'll find the volume of the rectangular prism. (l * w * h)
12 * 9 * 7.5
Multiply 12 by 9 to get 108.
108 * 7.5
Now, multiply 108 by 7.5 to get 810. (756 + 54 = 810)
810
Now for the triangular prism. (1/2(l * w * h))
1/2(12 * 9 * 1.5) (I figured the height was 1.5 since the height of the rectangular prism was 7.5; the entire figure's height was 9)
Multiply 12 by 9 to get 108.
1/2(108 * 1.5)
Multiply 108 by 1.5 to get 162. (108 + 54 = 162)
1/2(162)
Multiply 162 by 1/2 to get 81. (162/2)
81
Now add that to 810 to get 891.
810 + 81
891 ft³
The volume of the garage is 891 ft³.
Three less than the product of 5 and a number equals 7
A different math class took the same test with these five test scores: 92, 92,92,52,52 Find the standard deviation and the variance for this class.
The standard deviation for the given test scores is 20, and the variance is 400
We have,
To find the standard deviation and variance for the given test scores, we can follow these steps:
Calculate the mean (average) of the test scores:
Mean (μ) = (92 + 92 + 92 + 52 + 52) / 5 = 80
Calculate the deviation of each test score from the mean:
Deviation = Test score - Mean
For the given test scores:
Deviations = (92 - 80), (92 - 80), (92 - 80), (52 - 80), (52 - 80)
= 12, 12, 12, -28, -28
Square each deviation:
Squared Deviations = Deviation²
Squared Deviations = 12², 12², 12², (-28)², (-28)²
= 144, 144, 144, 784, 784
Calculate the variance:
Variance = (Sum of Squared Deviations) / (Number of Scores)
Variance = (144 + 144 + 144 + 784 + 784) / 5
= 2000 / 5
= 400
Calculate the standard deviation:
Standard Deviation = √Variance
Standard Deviation = √400
= 20
Therefore,
The standard deviation for the given test scores is 20, and the variance is 400.
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which inequality represents the sentence below?
two more thwn a numbre is less than 14
Answer:
the answer is B
I hope it helps have a great day
Answer:
2 + n < 14
Step-by-step explanation:
Hey!
==================================================================
Let's work this word by word.
"Two more than a number is less than 14"
--------------------------------------------------------------------------------------------------------------
"Two more than"
⇒ 2 +
"A number"
⇒ 2 + n
"Is less than"
⇒2 + n <
"14"
⇒2 + n < 14
==================================================================
Hope I Helped, Feel free to ask any questions to clarify :)
Have a great day!
More Love, More Peace, Less Hate.
-Aadi x
what is the value of A and B (5x + b)(5x - b) = ax^2 - 49
Answer:
a=25
b=7
Step-by-step explanation:
find the height of a cone when its diameter is 8 inches and the volume is 100 cubic inches
Answer:
[tex]\frac{75}{4\pi }[/tex] inches or approximately 5.97 inches
Step-by-step explanation:
Use the cone volume formula: V = [tex]\pi[/tex]r²[tex]\frac{h}{3}[/tex]
The diameter is 8 inches, so the radius will be 4 inches.
Plug in the radius and volume, and solve for h
V = [tex]\pi[/tex]r²[tex]\frac{h}{3}[/tex]
100 = [tex]\pi[/tex](4²)([tex]\frac{h}{3}[/tex])
100 = 16[tex]\pi[/tex][tex]\frac{h}{3}[/tex]
Divide each side by 16[tex]\pi[/tex]
[tex]\frac{25}{4\pi }[/tex] = [tex]\frac{h}{3}[/tex]
Cross multiply and solve for h:
4[tex]\pi[/tex]h = 75
h = [tex]\frac{75}{4\pi }[/tex]
So, the cone's height is [tex]\frac{75}{4\pi }[/tex] or approximately 5.97 inches