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3 years ago

S. The area of a stage for a concert is 216 square feet. The length is 6 times the width. Find the dimensions of

Mathematics

1 answer:

Travka [436]3 years ago

4 0

Answer:

Width=6 Length=36

Step-by-step explanation:

The stage is rectangular since the length is not equal to width.

We use the formula (Width × Length) to obtain the area of any rectangle.

But the Length is 6 times the Width, therefore we equate the formula for the area of stage as

Width × 6Width = 216

we get Width as 6 and 6width which is the length as 36

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Plzzzzzz help (28 + 7 + 6 + 3) X 1/2 explain

xeze [42]

28/7 + 6/3 first divide 28/7
4 + 6/3 the divide 6/3
4 + 3 and then add them up which is 7
7 divide 1/2
Which is 14
HAVE A GREAT DAY:) !

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3 years ago

What is the measure of

Whitepunk [10]

Answer: B

Explanation: if it's not right, that's okay you triedyou will pass, i know it!

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3 years ago

It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken if the desir

Ksju [112]

Answer:

We need a sample size of at least 75.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, we find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

The standard deviation is the square root of the variance. So:

$\sigma = \sqrt{484} = 22$

With a .95 probability, the sample size that needs to be taken if the desired margin of error is 5 or less is

We need a sample size of at least n, in which n is found when M = 5. So

$M = z*\frac{\sigma}{\sqrt{n}}$

$5 = 1.96*\frac{22}{\sqrt{n}}$

$5\sqrt{n} = 43.12$

$\sqrt{n} = \frac{43.12}{5}$

$\sqrt{n} = 8.624$

$(\sqrt{n})^{2} = (8.624)^{2}$

$n = 74.4$

We need a sample size of at least 75.

6 0

3 years ago

Read 2 more answers

A girl made a ladybug cage. Her cage has five sides. Each side has a length of 28 centimeters (cm). The cage is 20 cm high. What

Aleksandr [31]

The shape of her Cage's base is Pentagon

The perimeter of the base of the cage is 140 cm

Step-by-step explanation:

Side length of the base of the cage = 28cm

No. of sides the base has = 5

The shape of the cages base is Pentagon as it has 5 sides.

Perimeter= 5(28)

= 140cm

The perimeter of the base of the cage is 140 cm

5 0

3 years ago

39 13 32 11 24 equal 109

luda_lava [24]

Answer:

They equal 119 not 109

Step-by-step explanation:

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3 years ago