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zloy xaker [14]
3 years ago
6

Yusef drove 130 miles in 2.5 hours. Which equation can be used to calculate r, the average speed at which Yusef drove?

Mathematics
1 answer:
Stels [109]3 years ago
7 0
130 / 2.5 = 52 miles
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Braxton opened up his checking account with $500. On Monday, he withdrew $120 to purchase a pair of shoes. On Wednesday, he depo
AURORKA [14]

Answer:

$425

Step-by-step explanation:

subtract 120 and 5 from his starting total to get how much he has after all his purchases. Then add 50 to that total to get your answer.

5 0
3 years ago
How many inches are in feet
GaryK [48]
Answer: 12 inches

Explanation:

12 inches = 1 feet
3 0
3 years ago
Read 2 more answers
What us the length of the longer side?
julsineya [31]
The perimeter:
P=2\cdot(3x+3)+2\cdot2x=6x+6+4x=10x+6\\\\P=146\ units\to10x+6=146\ \ \ |-6\\\\10x=140\ \ \ |:10\\\\x=14\ units
The length of the longer side:
3x+3=3\cdot14+3=42+3=45\ units

3 0
3 years ago
A random sample of 40 binomial trials resulted in 14 successes. test the claim that the population proportion of successes does
mylen [45]

Using the z-distribution, since the p-value of the test is of 0.057 > 0.05, there is not enough evidence that the population proportion of successes does not equal 0.50.

<h3>What are the hypotheses tested?</h3>

At the null hypotheses, we test if the proportion of successes equals 0.5, hence:

H_0: p = 0.5

At the alternative hypotheses, we test if it does not equal, hence:

H_1: p \neq 0.5

<h3>What is the test statistic?</h3>

The test statistic is given by:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

In which:

  • \overline{p} is the sample proportion.
  • p is the proportion tested at the null hypothesis.
  • n is the sample size.

For this problem, the parameters are given by:

n = 40, \overline{p} = \frac{14}{40} = 0.35, p = 0.5

Hence the test statistic is given by:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

z = (0.35 - 0.5)/(0.5/sqrt(40))

z = -1.9.

<h3>What is the decision?</h3>

Using a z-distribution calculator, considering a two-tailed test, as we are testing if the proportion is different of a value, with z = -1.9, we get that the p-value of the test is of 0.057.

Since the p-value of the test is of 0.057 > 0.05, there is not enough evidence that the population proportion of successes does not equal 0.50.

More can be learned about the z-distribution at brainly.com/question/16313918

#SPJ4

5 0
1 year ago
45% of what distance is 135 miles
horrorfan [7]
300 miles. Hope it helps
8 0
3 years ago
Read 2 more answers
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