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ollegr [7]
2 years ago
6

The Fernandez family has a square driveway with an area of 210.25 m2. Find the perimeter of the driveway. Round your answer to t

he nearest foot. There are approximately 3.3 ft in 1 meter. What’s the answer?
Mathematics
1 answer:
lesantik [10]2 years ago
6 0

Answer:

191 ft

Step-by-step explanation:

Mathematically, the area of a square is the square of the length of its side

so if the side is l, the area will be l^2

we need the length before we get the perimeter

Thus;

l^2 = 210.25

l = √210.25

l = 14.5 m

We now need to get the perimeter of the drive way

The perimeter of the driveway will be 4 * l

= 4 * 14.5 = 58 m

we now convert this to ft

From the question;

3.3 ft = 1 m

x ft = 58 m

x = 58 * 3.3

x = 191.4 ft

To the nearest foot, this is 191 ft

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Step-by-step explanation:

Just simplify it by its nearest tenth

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Theoretical probability (TP) is given by:
TP=[Number of favorable (desired) outcomes]/[Total number of possible outcomes]
From the information given:
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3 years ago
What is the circumference in centimeters the circle is 24 centemeters in diamater
Pachacha [2.7K]

Answer:C≈75.4cm

d Diameter

24

cm

d

r

r

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d

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Step-by-step explanation:

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3 years ago
Find the P-value for a test of the claim that more than 60% of the people following a particular diet will experience increased
lina2011 [118]

Answer:

The p-value of the test is 0.0207.

Step-by-step explanation:

Test of the claim that more than 60% of the people following a particular diet will experience increased energy (H1: p > 0.6).

The null hypothesis is:

H_0: p = 0.6

The alternate hypothesis is:

H_1: p > 0.6

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

0.6 is tested at the null hypothesis:

This means that \mu = 0.6, \sigma = \sqrt{0.6*0.4}

Of 100 randomly selected subjects who followed the diet, 70 noticed an increase in their energy level.

This means that n = 100, X = \frac{70}{100} = 0.7

Test statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{0.7 - 0.6}{\frac{\\sqrt{0.6*0.4}}{\sqrt{100}}}

z = 2.04

P-value of the test:

The p-value of the test is the probability of finding a sample proportion of at least 0.7, which is 1 subtracted by the p-value of z = 2.04.

Looking at the z-table, z = 2.04 has a p-value of 0.9793

1 - 0.9793 = 0.0207

The p-value of the test is 0.0207.

4 0
2 years ago
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