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4 years ago

Find the lengthof sectionA & D in the diagram below(PLEASE ANSWER QUICKLY:) )

Mathematics

1 answer:

Dmitrij [34]4 years ago

5 0

Answer:

30.47

Step-by-step explanation:

Use the Pythagorian theorym

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Plz need the answer and how

GarryVolchara [31]

hi!

1) rewrite as a fraction

(2^4/2^2)^3

2) reduce the expression by cancelling out the common factors

so factor out 2^2 out of 2^4

3) multiply by 1 so,

(2^2 * 2^2/ 2^2 * 1)^3

4) continue to cancel out common factors the rewrite the expression to be

(2^2/1)^3

5) then divide 2^2 by 1 so, it will be (2^2)^3

6) lastly simplify the expression so apply the power rule and multiply so it will be 2^2*3

then it will be 2^6

and raise 2 to the power of 6 and you answer is 64

5 0

3 years ago

Read 2 more answers

3. What word phrase can you use to represent the following algebraic expression: 7x + 4?

Evgesh-ka [11]

Answer:
B

explanation:
7x + 4 means you are adding 7 times x and four

4 0

4 years ago

Please can someone help me, thank u

Goshia [24]

Answer:

Step-by-step explanation:

4×22/7×2.6^2=85.0cm

5 0

3 years ago

A Gallup Poll showed that 30% of Americans are satisfied with the way things are going in the United States. Suppose a sample of

mars1129 [50]

The expected number of a distribution is its mean.

The expected number of Americans who are satisfied with the way things are going in the United States is 6
The standard deviation of Americans who are satisfied with the way things are going in the United States is 2.05

The given parameters are:

$\mathbf{p = 30\%}$ --- the proportion that are satisfied

$\mathbf{n = 20}$ --- the sample size

(a) The expected number that are satisfied

This is calculated using:

$\mathbf{E(x) = np}$

So, we have:

$\mathbf{E(x) = 20 \times 30\%}$

$\mathbf{E(x) = 6}$

The expected number of Americans who are satisfied with the way things are going in the United States is 6

(b) The standard deviation of those that are satisfied

This is calculated using:

$\mathbf{\sigma = \sqrt{n \times p \times (1 - p)}}$

So, we have:

$\mathbf{\sigma = \sqrt{20 \times 30\% \times (1 - 30\%)}}$

$\mathbf{\sigma = \sqrt{20 \times 30\% \times 70\%}}$

$\mathbf{\sigma = \sqrt{4.2}}$

$\mathbf{\sigma = 2.05}$

The standard deviation of Americans who are satisfied with the way things are going in the United States is 2.05

Read more about expected value and standard deviations at:

brainly.com/question/17088771

4 0

3 years ago

Wayne is hanging a string of lights 78 feet long around the three sides of his piano, which is adjacent to his house. The length

Sauron [17]

Answer:

The width is 18 feet and the length is 42 feet

Step-by-step explanation:

Let x feet be the width of the patio. The length of the patio is 6 feet longer than twice it’s width, then the length of the patio is 2x+6 feet.

Wayne is hanging a string of lights 78 feet long around the three sides of his patio, which is adjacent to his house. The side with length 2x+6 feet is adjacent to the house, so Wayne is hanging a string along three sides with lengths x ft, x ft and 2x+6 ft.

Hence,

$x+x+2x+6=78\\ \\4x=78-6\\ \\4x=72\\ \\x=18\ ft$

The width $= 18$ ft

The length $=2\cdot 18+6=36+6=42$ ft

7 0

3 years ago