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3 years ago

PLEASE HELP ME ITS DUE IN LIKE 7 mins

Mathematics

2 answers:

Oksana_A [137]3 years ago

4 0

Answer:

The answer to your question is 919,797

Step-by-step explanation:

Nookie1986 [14]3 years ago

3 0

Answer:

919,797.64

Step-by-step explanation:

1 82100

2 84152.5

3 86256.3125

4 88412.72031

5 90623.03832

6 92888.61428

7 95210.82964

8 97591.10038

9 100030.8779

10 102531.6498

total = 919,797.64

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3 years ago

Let f(x) = -3x + 2 and g(x) - 4x + 6. Find (f•g)(-5).

mezya [45]

Answer:

(f•g)(-5) = -238

Step-by-step explanation:

We have that:

f(x) = -3x + 2

g(x) = 4x + 6

Find (f•g)(-5).

First we find (f.g)(x)

f(x)*g(x) = (-3x + 2)*(4x + 6) = -12x² -10x + 12

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3 years ago

What is the equation of the line in slope-intercept form that is perpendicular to the line y = x – 2 and passes through the poin

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The slope is -4/3 of the perpendicular line:
Then:
y-y1=m(x-x1)
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3 years ago

Ascending order 1/2 1/3 5/12 3/4

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Answer:

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Step-by-step explanation:

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2 years ago

A confidence interval was used to estimate the proportion of statistics students that are female. A random sample of 72 statisti

jeyben [28]

Answer:

We need a sample of size at least 13.

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 $1 - \frac{\alpha}{2}$ .

The margin of error is:

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

90% confidence interval: (0.438, 0.642).

The proportion estimate is the halfway point of these two bounds. So

$\pi = \frac{0.438 + 0.642}{2} = 0.54$

95% confidence level

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

Using the information above, what size sample would be necessary if we wanted to estimate the true proportion to within ±0.08 using 95% confidence?

We need a sample of size at least n.

n is found when M = 0.08. So

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

$0.08 = 1.96\sqrt{\frac{0.54*0.46}{n}}$