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gizmo_the_mogwai [7]

2 years ago

12

in a survey if 27.5 percent of those questioned chose swimming as their favorite. If 11 people chose swimming then how many peop

le were surveyed

1 answer:

arlik [135]2 years ago

3 0

27.5% of x=11 x is the number of people 27.5%=.275 x=11/.275=40 people in the survey participated

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Does (1, 4) make the inequality 4x + 2y = 16 true

Fiesta28 [93]

Answer:

no it is false.

Step-by-step explanation:

Because The left side 12 does not equal to the right side 16, which means that the given statement is false.

4 0

2 years ago

Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and

sergij07 [2.7K]

Answer:

a) sample size is 40

Step-by-step explanation:

(a)

$\sigma=4$ minutes

Margin of error, E is 75 seconds E=75/60= 1.25 minutes.

The level of significance $\alpha= 0.05$ for 95% level of significance

For 95% confidence interval $z_{\frac{\alpha}{2}}=1.96$ from standard deviation table

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Keywords:

95% confidence, sample size, Wall Street Journal

3 0

3 years ago

Use the angle relationship in the figure below to solve for x. Assume that lines a and b are parallel and the given angles are g

Daniel [21]

9514 1404 393

Answer:

x = 5°

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4 0

2 years ago

On the scale drawing of Cold Lake Camp, the mess hall is 5 cm from the lodge. The scale for the map is 2 cm = 100 m.

romanna [79]

Answer:

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6 0

2 years ago

Which ordered pair is a solution to the system of equations?

mixer [17]

(2x - y = -2)2
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Solution: (-3,-4)

6 0

2 years ago

Read 2 more answers