Answers
Answer:
10. 123º
13. 65º
Step-by-step explanation:
For number 10, a straight line is equal to 180º so all we have to do is subtract 57 (the number that we're given) from 180
For number 13, vertical angles are always congruent (the same) so we know that it's 65º
Related Questions
Alternate Sources of Fuel Seventy-five percent of Americans favor spending government money to develop alternative sources of fuel for automobiles. For a random sample of 140 Americans, find the mean, variance, and standard deviation for the number who favor government spending for alternative fuels. Round your answers to three decimal places.
Part: 0/2 ______
Part 1 of 2
(a) Find the mean.
Mean: μ= _____
Answers
The mean number of Americans who favor government spending for alternative fuels can be calculated by multiplying the percentage of Americans who favor such spending by the total sample size. In this case, 75% of Americans favor government spending, and the sample size is 140.
Mean = (Percentage of Americans who favor government spending) * (Sample size)
= 0.75 * 140
= 105
Therefore, the mean number of Americans who favor government spending for alternative fuels is 105.
The mean represents the average or central tendency of the data. In this context, it indicates the average number of Americans in the sample who support government spending for alternative fuels. It is obtained by multiplying the percentage of Americans who favor such spending by the sample size.
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Emmy is tossing bean bags at a target. She hit the target on 9 out of her last 18 tries. Considering this data, how many hits would you expect Emmy to get during her next 16 tosses?
Answers
Answer:
I would expect Emmy to get 8 hits in her next 16 tosses.
Emmy is to get 8 hits in her next 16 tosses.
What is probability?Probability is defined as the ratio of the number of favourable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.
Probability = Number of favourable outcomes / Number of samples
Given that Emmy is tossing bean bags at a target. She hit the target on 9 out of her last 18 tries. Considering this data.
The probability is,
P = 9 / 18
P = 0.5
The expected number of the hits on the target in 16 tosses will be;-
Number = 16 x 0.5
Number = 8
Therefore, Emmy is to get 8 hits in her next 16 tosses.
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a cylinder with the radius of 12 feet and height of 1.2 feet. What is the total surface area of the cylinder in square feet?
Answers
Answer:
995.26
Step-by-step explanation:
I'm not sure but this is what I got
show directly from the definition that if (xn) and (yn) are cauchy sequences, then (xn) (yn) and (xnyn) are cauchy sequences.
Answers
Given that (xn) and (yn) are Cauchy sequences, then for any ε > 0, there exist N1 and N2 such that |xn - xm| < ε/2, for all n, m ≥ N1 and |yn - ym| < ε/2, for all n, m ≥ N2. Then, for all n, m ≥ max{N1, N2},
we have: |xnyn - xmym| = |xnym - xmym + xmym - xnym| ≤ |xn - xm||ym| + |ym - yn||xm| ≤ |xn - xm|ε/2 + |ym - yn|ε/2 < εThis shows that (xnyn) is a Cauchy sequence.
Moreover, for any ε > 0, there exists N such that |xn - xm| < ε/2 and |yn - ym| < ε/(2max{|x1|, |x2|, . . . , |y1|, |y2|, . . . , |yn|}) for all n, m ≥ N. Then, for all n, m ≥ N,
we have: |xnyn - xmym| = |xnym - xmym + xmym - xnym| ≤ |xn - xm||ym| + |ym - yn||xm| + |ym - yn||yn| ≤ |xn - xm|ε/(2max{|x1|, |x2|, . . . , |yn|}) + |ym - yn|ε/(2max{|x1|, |x2|, . . . , |yn|}) + |yn|ε/(2max{|x1|, |x2|, . . . , |yn|}) < ε.
This shows that (xn)(yn) is also a Cauchy sequence.
Therefore, from the given definition, it has been shown that if (xn) and (yn) are Cauchy sequences, then (xn) (yn) and (xnyn) are Cauchy sequences.
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A coach uses a new technique to train gymnasts. 7 gymnasts were randomly selected and their competition scores were recorded before and after the training. The results means of two populations are shown below. Assume that two dependent samples have been randomly selected from normally distributed populations. Using a 0.01 level of significance, test the claim that the training technique is effective in raising the gymnast scores?
before 9.5, 9.4, 9.6, 9.5, 9.5, 9.6, 9.7
after 9.6, 9.6, 9.6, 9.4, 9.6, 9.9, 9.5
Answers
There is insufficient evidence to support the claim that the training technique is effective in raising the gymnasts scores.
In hypothesis testing, we often use significance levels such as 0.01 to determine whether or not there is enough evidence to support the hypothesis.
Here is the solution to the given problem.
The null hypothesis is that the training technique is not effective in raising the gymnasts' scores.
It is expressed as
H0: µd = 0.
The alternative hypothesis is that the technique is effective in raising the gymnasts' scores.
It is expressed as
Ha: µd > 0.
The significance level α = 0.01 is given.
Therefore, the given problem can be tested using a one-tailed t-test.
This is because the alternative hypothesis states that the mean difference between the two populations is greater than zero.
A t-test is appropriate because the sample sizes are less than 30.
The difference between the before and after competition scores of each gymnast should be calculated.
This gives us the difference scores, which are as follows:
0.1, 0.2, -0.02, -0.1, 0.1, 0.3, -0.2.
Next, we compute the mean and standard deviation of the differences. We have:
n = 7d
= 0.0714Sd
= 0.1466
Then we compute the t-statistic:
t = (d - µd) / (Sd / √n)
t = (0.0714 - 0) / (0.1466 / √7)
t = 1.5184
The degrees of freedom for this test are (n - 1) = 6.
Using a t-distribution table with 6 degrees of freedom and a significance level of 0.01 for a one-tailed test, we find that the critical t-value is 2.998.
For the given problem, the test statistic t = 1.5184 is less than the critical value of 2.998.
Therefore, we do not reject the null hypothesis.
There is insufficient evidence to support the claim that the training technique is effective in raising the gymnast scores.
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XXX
X
х
3
4
? 11 14 1 13
Worm Length (inches)
?
inch
?
DONE
AZ
539 Complete
Answers
Answer:
I can't able to understand this question plz check this question if it is right or not
"Write a cost function for each of the given scenarios. Identify all variables used. (See Example 1.) 1.) A chain-saw rental firm charges $25, plus $5 per hour. 2.) A trailer hauling service charge $95 plus $ 8 per mile
Answers
The cost function for each of the given scenarios are as follows:
1) Cost function for chain-saw rental firm = $25 + $5h
2) Cost function for trailer hauling service = $95 + $8m
1.)
Cost function for chain-saw rental firm = $25 + $5h
Where, h is the number of hours the chainsaw is rented
Variables used in this scenario are:
Cost = C ($), Renting time = h (hours),
Charge per hour = c ($)
2.)
Cost function for trailer hauling service = $95 + $8m
Where, m is the number of miles the trailer has traveled.
Variables used in this scenario are:
Cost = C ($),
Distance traveled = m (miles),
Charge per mile = c ($)
Therefore the two cost functions are:
1) Cost function for chain-saw rental firm = $25 + $5h
2) Cost function for trailer hauling service = $95 + $8m
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Berverly has 2 pens she buys 1 more pen enter the numerical expressions in the box that models this situation
Answers
Answer:
2 + 1 = 3
Step-by-step explanation:
According to the scenario, computation of the given data are as follows,
Berverly already has = 2 pens
Berverly bought = 1 pen
Then to show this situation in numerical expression, we have to add both values, then
= 2 + 1 = 3
Hence, this shows that the total number of pens Berverly has after buying is 3.
A flowerpot has a diameter of 15 centimeters. Which expression can be used to find its circumference, C, in centimeters?
A
C = 7.5 × π
B
C = 15 × π
C
C = 2 × 15 × π
D
C = 15 × 15 × π
Answers
What is the perimeter
___ miles
Answers
I think the anwser for this is 60 in miles
Answer:
23
Step-by-step explanation:
what is the y-intercept of the graph of 4y - 1= 3
Answers
Answer:Using the slope-intercept form, the y-intercept is 1
A dog trainer compared mean numbers of lessons for two
groups of dogs to learn a new trick.
Mean number of lessons Mean Absolute Deviation (MAD)
Group A 15
3
Group B 9
3
Which statement about the data is true?
A. The MAD for group A is more than the MAD for group B.
B. The mean number of lessons for group A is greater than the mean
for group B by 6 MADs.
C. The mean number of lessons for group A is greater than the mean
for group B by 2 MADs.
D. On average, the dogs in group B required more lessons than the
dogs in group A.
Answers
Answer:
C. The mean number of lessons for group A is greater than the mean for group B by 2 MADs.
Step-by-step explanation:
Mean of Group A is greater than the mean of group B. The mean absolute deviation for the group A and B is 3. The different between the mean is 6 (15 - 9)
Number of mean absolute deviations is :
Difference between mean of two groups / MAD
6 / 3 = 2.
determine the mode of the set of data in the stem and leaf plot below
Answers
Answer:
51
Step-by-step explanation:
mode is the value which appears the most than other values. In this case 51 will appear 3 times.
Answer:
5.1
Step-by-step explanation:
dont forget the decimal
find the nth maclaurin polynomial for the function. f(x) = sin(x), n = 3
P3(x) = ___
Answers
The third-degree Maclaurin polynomial for f(x) = sin(x) is P3(x) = x - (x^3) / 6.
To find the nth Maclaurin polynomial for the function f(x) = sin(x) when n = 3, we need to compute the polynomial up to the third-degree term.
The Maclaurin polynomial for a function f(x) centered at x = 0 is given by the formula:
Pn(x) = f(0) + f'(0)x + (f''(0)x^2) / 2! + (f'''(0)x^3) / 3! + ...
Let's calculate the nth Maclaurin polynomial for f(x) = sin(x) when n = 3:
First, we find the values of the function and its derivatives at x = 0:
f(0) = sin(0) = 0
f'(x) = cos(x), so f'(0) = cos(0) = 1
f''(x) = -sin(x), so f''(0) = -sin(0) = 0
f'''(x) = -cos(x), so f'''(0) = -cos(0) = -1
Using these values, we can write the Maclaurin polynomial:
P3(x) = 0 + 1x + (0x^2) / 2! + (-1x^3) / 3!
Simplifying further, we have:
P3(x) = x - (x^3) / 6.
Therefore, the third-degree Maclaurin polynomial for f(x) = sin(x) is:
P3(x) = x - (x^3) / 6.
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What is the area of the triangle?
5
4
3
units2
Answers
Answer:
area of triangle =1/2 p×b=1/2×4×3=6unit²
Find the circumference of the pizza to the nearest hundredth.
18 in.
be
RE
circumference: about
GLASE
SHELIN
HALL
Answers
Complete Question
Find the circumference of the pizza to the nearest hundredth.
When Diameter = 18 in.
Answer:
56.55 inches
Step-by-step explanation:
A pizza is circular in shape.
The formula for the circumference of a circle is given as:
πD
Where D = Diameter
From the above question,
Diameter = 18 inches
Hence,
Circumference of the circular pizza = π × 18 inches
= 56.548667765 inches
Approximately = 56.55 inches
Sam needs a new jacket. Use the information
below to decide where Sam should buy the
jacket. The one he wants costs $84 dollars at
Coats 'R Us, but is 20% off. The same jacket
costs $95 at Coat Barn, but is 25% off. Where
should he buy the jacket and why?
A. Sam should buy the jacket at Coats 'R Us
because it is cheaper before the discount.
B. Sam should buy the jacket at Coats 'R Us
because it is cheaper after the discount.
C. Sam should buy the jacket at Coat Barn
because it is cheaper there after the discount.
D. Sam should buy the jacket at Coat Barn
because it has a bigger discount.
Answers
Answer:
B. Sam should buy the jacket at Coats 'R Us because it is cheaper after the discount
Answer:
I suggest that sum should buy the jacket at coats 'R us because it is still cheaper after the discount even when you've not counted the discount in it is still cheaper than the other one and the other one even when it has such a high discount it is still not cheap so I suggest that the answer is choice B
Ann prefers ice cream cups. Ben and Clay prefer ice cream sandwiches. The cafeteria manager puts one coupon for an ice cream cup and two coupons for ice cream sandwiches in a bag. Ann, Ben, and Clay each draw, without looking, one coupon from the bag. Each keeps the coupon he or she drew. What is the probability that all three get their preference?
a. 1/2
b. 1/3
c. 1/6
d. 2/3
Answers
Hope this helps.
WILL GIVE BRAINLIEST what is
453252 x 213414
Answers
Answer:
96730322328
Step-by-step explanation:
I hope this helps
9.67303223x10^10.
Instructions:type the correct answer in each box. Spell all words correctly, and use numerals instead of words for numbers. If necessary, use / for the fraction bar(s). Consider the parabola represented by the equation -2y2 = 4x. This parabola will open to the. The equation of the directrix of the parabola is. The focus of the parabola is
Answers
The given parabola is a downward-opening parabola, its directrix is y = -1/2, and its focus is located at (0, -1/2).
The parabola represented by the equation [tex]-2y^2 = 4x[/tex] is a downward-opening parabola.
To understand the direction of the parabola, we can look at the coefficient of the [tex]y^2[/tex] term in the equation. Since it is negative (-2), the parabola opens downwards. If the coefficient were positive, the parabola would open upwards.
The equation of the directrix of a parabola can be determined by rearranging the given equation to the standard form, which is [tex](y - k)^2 = 4p(x - h)[/tex], where (h, k) represents the vertex of the parabola and p represents the distance between the vertex and the focus.
In the given equation, [tex]-2y^2 = 4x[/tex], we can divide both sides by -2 to obtain [tex]y^2 = -2x[/tex]. Comparing this to the standard form, we can see that the vertex is at (0, 0) since h = 0 and k = 0.
The coefficient of x in the standard form equation is 4p. Therefore, in our equation, 4p = -2, which implies p = -1/2.
Since p is negative, the directrix will be a horizontal line parallel to the x-axis and situated below the vertex. The equation of the directrix can be written as y = -1/2.
The focus of the parabola can be found by adding p to the y-coordinate of the vertex. In this case, since the vertex is at (0, 0) and p = -1/2, the focus will be at (0, -1/2).
In summary, the parabola represented by [tex]-2y^2 = 4x[/tex] is a downward-opening parabola. The equation of the directrix is y = -1/2, and the focus is located at (0, -1/2).
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An 18-foot ladder leaning against a wall makes an angle of elevation of 70° with the ground. How far up the wall is the ladder, to the nearest foot?
Answers
Answer:
17 ft
Step-by-step explanation:
An 18-foot ladder leaning against a wall makes an angle of elevation of 70° with the ground. How far up the wall is the ladder, to the nearest foot?
We solve the above question using the Trigonometric function of Sine
sine theta = Opposite/Hypotenuse
theta = Angle of elevation = 70°
Hypotenuse =Length of the ladder = 18ft
Opposite = Height of the wall = x
Therefore
sin 70 = x/ 18 ft
Cross Multiply
x = sin 70 × 18 ft
x = 16.914467174 ft
Approximately = 17 ft
Find all eigenvalues of the given matrix. (Enter your answers as a comma-separated list.) 1 0 0 00-4 A = 04 0 a = =
Answers
The eigenvalues of the given matrix A are 1, 2, and -2.
To find the eigenvalues of the matrix A:
A = [1 0 0]
[0 -4]
[0 4]
To find the eigenvalues, we need to solve the characteristic equation |A - λI| = 0, where λ is the eigenvalue and I is the identity matrix.
The matrix A - λI is:
A - λI = [1 - λ 0]
[0 -4]
[0 4 - λ]
Taking the determinant of A - λI:
|A - λI| = (1 - λ)(-4 - λ(4 - λ))
Expanding the determinant and setting it equal to zero:
(1 - λ)(-4 - λ(4 - λ)) = 0
Simplifying the equation:
(1 - λ)(-4 - 4λ + λ²) = 0
Now, we can solve for λ by setting each factor equal to zero:
1 - λ = 0 or -4 - 4λ + λ² = 0
Solving the first equation, we get:
λ = 1
Solving the second equation, we can factorize it:
(λ - 2)(λ + 2) = 0
From this equation, we get two additional eigenvalues:
λ = 2 or λ = -2
Therefore, the eigenvalues are 1, 2, and -2.
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Determine the measure of arc BC
Answers
Answer:
arc BC = 132°
Step-by-step explanation:
The central angle is equal to the arc that subtends it , then
arc BC = ∠ BOC = 132°
Elena is graduating from high school. She will attend a private, 4-year university and study to become a Certified Public Accountant. The annual cost for her tuition, room and board, and books is $22,255. Elena's parents have a college fund with $ 54,000 to help with the costs. Elena received a scholarship for $500 per semester for four years .
Answers
Answer:
Reminder to eat drink and take care. :)
Step-by-step explanation:
Answer:
8,255 reminder to eat today
what does this equal??
Answers
Answer:
I think 3
Step-by-step explanation:
Please help!!!!! 8th grade mathHint not A
Answers
Answer:
c
Step-by-step explanation:
it passes vertical line test and is linear
Answer:
C
Step-by-step explanation:
The answer is C. Hoped it helped.
Select all the equations that represent functions that are non-linear.
A. y = x
B. 2y = 1/2x
C. y = 8 + x
D. y - 6 = x^2
E. y= 1/3-5x
F. y= 2x^2 + 5 - 3x^2
Answers
Answer:
D, F.
Step-by-step explanation:
D and F contain x^2.
URGENT!!!!HELP!!!!PLS!!!NOW!!!!!!HURRY!!!
Answers
Answer:
I'm guessing it's 4 i think but sorry if it's wrong
Step-by-step explanation:
Find a Mobius transformation f such that f(0) = 0, f(1) = 1, f([infinity]) = 2, or explain why such a transformation does not exist.
Answers
A Möbius transformation is a transformation of the form f(z) = (az+b)/(cz+d), where a, b, c, and d are complex numbers and ad-bc ≠ 0. The complex number z maps to f(z).
To find the Möbius transformation f such that f(0) = 0, f(1) = 1, f([infinity]) = 2, we follow these steps:
Step 1: Map 0 to 0 We need to map 0 to 0, so we set f(0) = 0. So, we get 0 = (a(0) + b) / (c(0) + d). This gives us b = 0. Step 2: Map infinity to 2We need to map [infinity] to 2, so we set f([infinity]) = 2. So, we get 2 = (a[infinity] + b) / (c[infinity] + d). This gives us a/c = 2/d. Cross-multiplying the terms, we get ad = 2c.
Let us assume that d = 1, then we have a = 2c.
We can substitute this value of a in the Möbius transformation, and we get f(z) = (2cz) / (cz + 1).Step 3: Map 1 to 1To map 1 to 1, we evaluate the Möbius transformation at z = 1. We get f(1) = (2c) / (c + 1) = 1.
Solving this, we get c = -1/2. Therefore, the Möbius transformation is f(z) = (2z) / (z - 2).
Hence, we have found the required Möbius transformation f(z) = (2z) / (z - 2) such that f(0) = 0, f(1) = 1, and f([infinity]) = 2.
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OMG HELP PLS IM PANICKING OMG OMG I GOT A F IN MATH AND I ONLY HAVE 1 DAY TO CHANGE MY GRADE BECAUSE TOMORROW IS THE FINAL REPORT CARD RESULTS AND I DONT WANNA FAIL PLS HELP-
Answers
Answer: $1,800
Step-by-step explanation:
600x3=1,800
Answer:
1800 is the cost.
Step-by-step explanation:
Each hoop costs 600 dollars and their are 3 hoops so multiply 600 times 3 or you can do 6 times 3 and add the zeros at the end which is 1800 dollars and btw you got this!!! don't give up. I believe in you :)