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lawyer [7]
3 years ago
5

How to do this with steps please help

Mathematics
1 answer:
Allushta [10]3 years ago
5 0

Answer:

Y =112 alternate angle

4x =y vertically opp

then x=112/4 = 28

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A study of recent records of car accidents revealed that average proportion of drivers who were distracted by their phones at th
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Answer:

At least 547 records need to be studied.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence interval 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

Z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

And the margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

95% confidence interval

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so z = 1.96.

In this problem, we have that:

M = 0.04, p = 0.35

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.04 = 1.96\sqrt{\frac{0.35*0.65}{n}}

0.04\sqrt{n} = 0.93486

\sqrt{n} = 23.37

n = 546.2275

At least 547 records need to be studied.

6 0
4 years ago
To lose one pound of fat, a 200-pound person must burn 3,500 calories. If that person burns 180 calories by walking for 30 minut
SVEN [57.7K]

Answer:

C - 19 hours 27 minutes

Step-by-step explanation:

180 × 2 = 360

360 calories in an hour

3500 × 2 = 7000 (amount of calories in 2 pounds)

7000 ÷ 360 = 19.4444...


I hope this helps


4 0
3 years ago
Mrs. Escalante was riding a bicycle on a bike path. After riding 2/3 of a mile, she discovered that she still needed to travel 3
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The answer to your question is...

<h2>1 5/12 or 17/12</h2>
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Johnny left home and drove west 6 miles to Bakersfield for flowers. Then he drove 8 miles north to his girlfriend’s house. How f
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They live 2 miles apart
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What are factors of 36 and 120
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4, 3, 12,

Step-by-step explanation:

7 0
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