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3 years ago

I need help this is a MAJOR test

Mathematics

1 answer:

exis [7]3 years ago

5 0

Answer:

I dont know the answer but I found out how you figure out if lines are supplementary

Step-by-step explanation:

1) let the measure of one of the supplementary angles be a

2) measure of the other angle is 2 times a

3) so the measure of the angle is 2a

4) if the sum of the two angles is 180 degrees then the angles are supplementary

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Find the GCF and factor. 1/3x^2+1/3x-4

Katena32 [7]

Answer:

GCF: 1

Factor: 1/3*(x-3)(x+4)

Step-by-step explanation:

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3 years ago

Please help me with this question

gladu [14]

The correct answer choice is (D) 1.10/1 Ib
Hope this helps!

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3 years ago

The question is in the image below! please answer asap! please help me with both questions and steps if possible! i seriously ne

Mice21 [21]

Answer:

AB is similar to YZ

AC is similar to YX

CB is similar to ZX

ΔABC ~ ΔYXZ

Reduction because it is smaller than the original picture

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Step-by-step explanation:

(hope this helps, sry about the explanations!)

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3 years ago

Write the equation of the line in point-slope form. (-3,2) and (-1,-2)

tester [92]

Answer:

y=-2x-4

Step-by-step explanation:

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3 years ago

The mayor asks you to determine whether or not most people (over 50%) support a tax on large soft drinks. You poll 500 adults wi

xeze [42]

Answer:

(1) The standard error is 0.0224.

(2) The error term is 0.058.

(3) The 99% confidence interval for the proportion of adults supporting the soft drink tax is (0.45, 0.57).

(4) Approximately 45% to 57% people support the soft drink tax.

Step-by-step explanation:

Let X = number of adults who support the soft drink tax.

The sample size is, n = 500.

The number of people who support the tax is, X = 255.

Compute the sample proportion as follows:

$\hat p=\frac{X}{n}=\frac{255}{500}= 0.51$

(1)

Compute the standard error as follows:

$SE_{\hat p}=\sqrt{\frac{\hat p(1-\hat p)}{n}} \\=\sqrt{\frac{0.51(1-0.51)}{500}}\\=0.0224$

Thus, the standard error is 0.0224.

(2)

The error term (Margin of error) is:

$MOE=z_{\alpha/2}\times SE_{\hat p}$

For 99% confidence interval the critical value of z is:

$z_{\alpha/2}=z_{0.01/2}=z_{0.005}=2.58$

Compute the value of MOE as follows:

$MOE=z_{\alpha/2}\times SE_{\hat p}\\=2.58\times0.0224\\=0.057792\\\approx0.058$

Thus, the error term is 0.058.

(3)

Compute the 99% confidence interval as follows:

$CI=\hat p\pm MOE\\=0.51\pm0.058\\=(0.452, 0.568)\\\approx(0.45, 0.57)$

Thus, the 99% confidence interval for the proportion of adults supporting the soft drink tax is (0.45, 0.57).

(4)

The report to be submitted to the mayor is that approximately 45% to 57% people support the soft drink tax.

7 0

3 years ago