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2 years ago

Find the slope of the line that passes through the points (-4, 7) and (3,-2)

Mathematics

1 answer:

schepotkina [342]2 years ago

8 0

Answer:

-9/7

Step-by-step

Slope Formula:

$\frac{y_2-y_1}{x_2-x_1}$

We can plug in the numbers 7 and -2 for the y and -4 and 3 for x

$\frac{7-(-2)}{-4-3} =\frac{9}{-7}$

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Are the 2 triangles congruent? If so, what postulate did you use?

jok3333 [9.3K]

Answer:

Step-by-step explanation:

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3 years ago

There are 7 7/8 cups of skittles in a Jar. If 2 1/4 cups are used for a party, how many skittes are left in the jar?

maw [93]

2 1/4 = 2 2/8. So, simply subtract 7 7/8 - 2 2/8 to get your final answer of 5 5/8

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3 years ago

T-2(3-2t)=2t+9 <br>algebra2

nekit [7.7K]

T-2(3-2t)=2t+9
t-6+4t=2t+9
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3 years ago

Read 2 more answers

a major metroplitan newspaper selected a simple random sample of 1,600 readers from their list of 100,000 subscribers. they aske

Arisa [49]

Answer:

The 99% confidence interval for the proportion of readers who would like more coverage of local news is (0.3685, 0.4315).

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 level of $1-\alpha$ , 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 $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$n = 1600, \pi = 0.4$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4 - 2.575\sqrt{\frac{0.4*0.6}{1600}} = 0.3685$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4 + 2.575\sqrt{\frac{0.4*0.6}{1600}} = 0.4315$

The 99% confidence interval for the proportion of readers who would like more coverage of local news is (0.3685, 0.4315).

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3 years ago

Name the set(s) of numbers to which 1.68 belongs

daser333 [38]

I think it's a rational number.

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3 years ago

Read 2 more answers