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TEA [102]
3 years ago
8

HELPPPPPP PLSSSSSSS !!!

Mathematics
1 answer:
Kruka [31]3 years ago
4 0

Answer:

I dont know what shape we are making but fi we were making an isosolece triangle the coordinates would be (8,1)

Step-by-step explanation:

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MATH............................................................
stira [4]

Answer:

For A its 10 Feet because if each  unit is 5 feet and there are 2 units then its 10 feet and then B is 35 because seven units means 5 x 7 then 35feet is the answer

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
In the past, 21% of all homes with a stay-at-home parent, the father is the stay-at-home parent. An independent research firm ha
Afina-wow [57]

Answer:

A sample size of 79 is needed.

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:

\pi = 0.21

The margin of error is:

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

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.  

What sample size is needed if the research firm's goal is to estimate the current proportion of homes with a stay-at-home parent in which the father is the stay-at-home parent with a margin of error of 0.09?

A sample size of n is needed.

n is found when M = 0.09. So

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

0.09 = 1.96\sqrt{\frac{0.21*0.79}{n}}

0.09\sqrt{n} = 1.96\sqrt{0.21*0.79}

\sqrt{n} = \frac{1.96\sqrt{0.21*0.79}}{0.09}

(\sqrt{n})^{2} = (\frac{1.96\sqrt{0.21*0.79}}{0.09})^{2}

n = 78.68

Rounding up to the nearest whole number.

A sample size of 79 is needed.

4 0
3 years ago
You stand a known distance from the base of the tree, measure the angle of elevation the top of the tree to be 15°, and then com
dybincka [34]

Answer:solo quiero puntos :(

Step-by-step explanation:

8 0
3 years ago
15.60 to 11.70 percent of change
Marizza181 [45]
15.6 - 11.7 = 3.9

3.9 ÷ 15.6 = .25

25% of change
8 0
3 years ago
What is the perimeter of Justin's garden in inches? I can't find the right answer 6 yards and 8 yards its a rectangle garden pls
madreJ [45]

Answer:

28 yards

Step-by-step explanation:

It's perimeter so you add (6x2)+(8x2)

The x2 is because there's 2 of each side

3 0
3 years ago
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