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Dmitry [639]
3 years ago
12

HELP PLEASE I NEED HELPPPP

Mathematics
1 answer:
nlexa [21]3 years ago
3 0

Answer:

174 inches squared

Step-by-step explanation:

First, we have to remember what the area of a triangle is:

\frac{base*height}{2}

Since there are 4 of the same triangle, multiply the area of one triangle by 4:

\frac{10*8.7}{2}

\frac{87}{2}

43.5

43.5(4)=174

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ruslelena [56]

Answer:

I

Step-by-step explanation:

5 0
3 years ago
Which of the following expressions is not equal to X^3?
Musya8 [376]

Answer:

D. x. x^7 . x^-4

Step-by-step explanation:

A. X^5 . X^-4 .X^2=X^(5-4+2)= X^3

B. X^-2 .X^9 .x^-4=X^(-2+9-4)= X^3

C.x^0 . x^10 . x^-7=X^(0+10-7)= X^3

D. x. x^7 . x^-4=X^(1+7-4)= X^4

6 0
3 years ago
A pilot can travel 450 miles with the wind in the same amount of time as 360 miles against the wind. Find the speed of the wind
Lunna [17]

Given:

A pilot can travel 450 miles with the wind in the same amount of time as 360 miles against the wind.

Pilot's speed in still air is 315 miles per hour.

To find:

The speed of the wind.

Solution:

Let the speed of wind be x miles per hour.

Speed with wind = 315+x miles per hour

Speed against wind = 315-x miles per hour

We know that,

Time=\dfrac{Distance}{Speed}

According to the question,

\dfrac{450}{315+x}=\dfrac{360}{315-x}

Divide both sides by 90.

\dfrac{5}{315+x}=\dfrac{4}{315-x}

By cross multiplication, we get

5(315-x)=4(315+x)

5(315)-5x=4(315)+4x

5(315)-4(315)=4x+5x

(5-4)315=9x

Divide both sides by 9.

\dfrac{(1)315}{9}=x

35=x

Therefore, the speed of wind is 35 miles per hour.

4 0
3 years ago
The earth travels one full rotation around the sun in approximately 365.25 days. How many minutes does it take for the earth to
VashaNatasha [74]

Answer:

55-15= 40

55,000-10,000=45,000

45000/55=819

i think it is 819?

Step-by-step explanation:

3 0
3 years ago
5|x3 - 21 + 7 when x = -2.
Tomtit [17]

Answer:

-422

Step-by-step explanation:

51[-2]³ - 21 + 7

51[-8] - 14

-408 - 14 = -422

I am joyous to assist you anytime.

6 0
3 years ago
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