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3 years ago

12

What are the benefits of erosion?

2 answers:

docker41 [41]3 years ago

7 0

The benefits of erosion are rocks can be broken down and made in to canyons. that is how the grand canyon was made

Margarita [4]3 years ago

4 0

In some rocks when I erosion occurs it reveals a beautiful crystal

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What is the answer to -5x+7y=11<br> -5x+3y=19

marusya05 [52]

$\left\{\begin{array}{ccc}-5x+7y=11\\-5x+3y=19&/\cdot(-1)\end{array}\right\\+\left\{\begin{array}{ccc}-5x+7y=11\\5x-3y=-19\end{array}\right\\-------------\\.\ \ \ \ \ \ \ \ 4y=-8\ \ \ \ |divide\ both\ sides\ by\ 4\\.\ \ \ \ \ \ \ \ \ y=-2\\5x-3(-2)=-19\\5x+6=-19\\5x=-19-6\\5x=-25\ \ \ \ \ |divide\ both\ sides\ by\ 5\\x=-5\\\\Answer:x=-5\ and\ y=-2$

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3 years ago

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Help me plz<br><br> 2<br> _ Y + 7 = 15<br> 3

julia-pushkina [17]

Answer:

y= 12

Step-by-step explanation:

2/3 y + 7 = 15

Subtract 7 from each side

2/3 y + 7-7 = 15-7

2/3 y = 8

Multiply each side by 3/2 to isolate y

3/2 * 2/3 y = 3/2 * 8

3/2 * 2/3 y = 3 * 4

y = 12

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3 years ago

In the image, point A marks the center of the circle. Which two lengths must form a ratio of 2:1?

harina [27]

I hope this helps you

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If the original length was 20 feet and the scaled length is 5 feet, what is the scale factor?

xenn [34]

1 to 4

Step-by-step explanation:

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3 years ago

The factory makes 400 cars per day. If the workday is eight hours long, what is the hourly rate at which cars are produced

AlladinOne [14]

50 cars per hour

To calculate the hourly rate divide 400 by 8

hourly rate = $\frac{400}{8}$ = 50 cars per hour

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3 years ago