2 years ago

One side of a square has a measurement of 2x + 4. Write an expression to represent the perimeter of the shape.

Mathematics

1 answer:

nydimaria [60]2 years ago

5 0

Answer:

4(2x+4)

for example, if 5 were the length of a side you'd do 4(5). 4 because theres 4 sides and the formula for P is P= l+l+w+w OR P=2l+2w

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Scorpion4ik [409]

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Step-by-step explanation:

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2 years ago

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jeka94

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3 years ago

The perimeter of a triangle is 56. The side lengths are x + 4, 3x + 7, and x + 9. What is the value of x?

Sidana [21]

<h3><u>Answer:</u></h3>

x = 7.2

<h3><u>Step-by-step explanation:</u></h3>

Perimeter: Side 1 + Side 2 + Side 3

=> x + 4 + 3x + 7 + x + 9 = 56

=> 5x + 20 = 56

=> 5x = 56 - 20

=> 5x = 36

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<h3><u>Conclusion:</u></h3>

Therefore, the value of x is 7.2.

Hoped this helped.

$BrainiacUser1357$

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2 years ago

Can you please explain to me how I would solve this problem? Can you please explain/and show all the steps?

Lena [83]

22 = z + (-9) Switch the sides
z = 22 - (-9) Solve
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7 0

3 years ago

Find the margin of error for a 90% confidence interval when the standard deviation is LaTeX: \sigma= 50????=50 and LaTeX: n = 25

Murrr4er [49]

Answer:

The margin of error for a 90% confidence interval is 16.4

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 25

Standard deviation = 50

$z_{critical}\text{ at}~\alpha_{0.10} = \pm 1.64$

Margin of error =

$z_{critical}\times \dfrac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$1.64\times \dfrac{50}{\sqrt{25}} = 16.4$

Thus, the margin of error for a 90% confidence interval is 16.4

8 0

3 years ago