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3 years ago

Help please ! I’ll mark brainliest:)

Mathematics

1 answer:

sashaice [31]3 years ago

7 0

<span>The answer is $4,955.30</span>

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What is the area of a regual octagon with sides five times as long?

Ugo [173]

Answer:

A=2(1+2)a exponet 2

a Side

Step-by-step explanation:

7 0

3 years ago

PLEASEEEE HELPPP

o-na [289]

Answer:

465 Dollars

Step-by-step explanation:

15h+40f = Amount Charged

if: h = 7

f = 9

15(7)+40(9) = Amount Charged

105 + 360 = Amount Charged

465 = Amount Charged

He will charge 465 dollars.

8 0

3 years ago

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Solving quadratic equations with complex solutions x2 + 4x + 8 = 0.

Daniel [21]

Answer:

$\large\boxed{x=-2\pm2i}$

Step-by-step explanation:

$x^2+4x+8=0\qquad\text{subtract 8 from both sides}\\\\x^2+4x+8-8=0-8\\\\x^2+2(x)(2)=-8\qquad\text{add}\ 2^2\ \text{to both sides}\\\\x^2+2(x)(2)+2^2=-8+2^2\qquad\text{use}\ (a+b)^2=a^2+2ab+b^2\\\\(x+2)^2=-8+4\\\\(x+2)^2=-4\iff x+2=\pm\sqrt{-4}\\\\x+2=\pm\sqrt{(4)(-1)}\qquad\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\x+2=\pm\sqrt4\cdot\sqrt{-1}\qquad\text{use}\ \sqrt{-1}=i\\\\x+2=\pm2\cdot i\qquad\text{subtract 2 from both sides}\\\\x=-2\pm2i$

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2 years ago

A hole is being dug into the ground at a rate of 5.3 feet per minute. Write an integer to describe the depth of the hole after 1

inna [77]

Answer:

79.5 feet

Step-by-step explanation:

5.3 per minute can also be written as the ratio 5.3:1. so if we have x:15, we can see that we've multiplied the right side by 15 so we have to do the same to the other side. 15 times 5.3 is 79.5. so thats your answer.

i hope this helps :))

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2 years ago

Carl wheezer and shaggy are doing the macarena

kondor19780726 [428]

.74% ar least or else he would crumble

4 0

3 years ago

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