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4 years ago

5

Can somebody explain to me how to do this

1 answer:

sashaice [31]4 years ago

4 0

Basically, a positive hundreds-place multiplication is going to move your decimal to the right by 2 places.

When you multiply the two together (which you can do in a calculator), you get an answer of 68.5. Again, this comes from moving the decimal in 0.685 two places to the right to receive your final answer.

I hope I was able to help. Best of luck.

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The diagram below shows a square inside a regular octagon. The apothem of the octagon is 15.69 units. To the nearest square unit

Musya8 [376]

Answer:

C. 647 square units

Step-by-step explanation:

To find the shaded area, subtract the area of the unshaded square from the area of the octagon.

<u>Area of the octagon</u>

$\textsf{Area of a regular polygon}=\dfrac{n\:l\:a}{2}$

where:

n = number of sides
l = length of one side
a = apothem

Given:

n = 8
l = 13
a = 15.69

Substitute the given values into the formula and solve for A:

$\implies \textsf{Area}=\sf \dfrac{8 \cdot 13 \cdot 15.69}{2}$

$\implies \textsf{Area}=\sf \dfrac{1631.76}{2}$

$\implies \textsf{Area}=\sf 815.88\:\:square \:units$

<u>Area of the square</u>

$\implies \textsf{Area}=\sf 13^2=169 \:\:square \:units$

<u>Area of the shaded region</u>

= area of the octagon - area of the square

= 815.88 - 169

= 646.88

= 647 square units (nearest square unit)

3 0

2 years ago

Read 2 more answers

Solve (-16.1)•9.4•(-7.2)=x•(-7.2)•(-16.1)

Fed [463]

Hey there! :)

Answer: x = 9.4

Step-by-step explanation : How do we know this? Well, let's first rewrite our question.

(-16.1) · 9.4 · (-7.2) = x · (-7.2) · (-16.1)

Let's multiply everything out.

(-16.1 · 9.4 · -7.2) = (x · -7.2 · -16.1)

Simplify.

1089.648 = 115.92x

Our goal is to isolate x, so we should divide both sides by 115.921089.648 ÷ 115.92 = 115.92x ÷ 115.92

Simplify.

9.4 = x

So, our final answer is x = 9.4

~hope I helped!~

8 0

4 years ago

Can someone tell me how this is wrong

alexgriva [62]

Answer:

There must have been a system of equations or some example given that had to be analysed.

K would be "some coefficient" but the question probably meant you were supposed to identify a specific coefficient.

Step-by-step explanation:

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4 years ago

HELP ASAP WILL AWARD BRAINLIEST Which relationship describes angles 1 and 2?

dusya [7]

Answer:

I think complementary angles

3 0

3 years ago

Read 2 more answers

demitri hikes 12 Miles on Wednesday and Thursday the amount of miles he hikes decreases by 25% how many miles did he hike on Thu

aleksandr82 [10.1K]

Answer:

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Step-by-step explanation:

.

5 0

3 years ago