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mash [69]
3 years ago
7

I got the answer nevermind

Mathematics
1 answer:
german3 years ago
5 0

Okay good job my dood

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Solve using Elimination<br><br> 3x+y=-9<br> y=5x+7
valentinak56 [21]

Answer

x=-2 and y=-3

Step-by-step explanation:

Step: Solvey=5x+7for y:

Step: Substitute5x+7 for y in 3x+y=−9:

3x+y=−9

3x+5x+7=−9

8x+7=−9(Simplify both sides of the equation)

8x+7+−7=−9+−7(Add -7 to both sides)

8x=−16

8x/8=−16/8

(Divide both sides by 8)

x=−2

Step: Substitute−2 for x in y=5x+7:

y=5x+7

y=(5)(−2)+7

y=−3(Simplify both sides of the equation)

7 0
2 years ago
Will give brainliest!! Using the measurements of the shapes.. determine the area and perimeter of the irregular polygon.
RSB [31]

Answer:

The perimeter is 28.2 units. I'm not sure about the area.

Step-by-step explanation:

I added up the side lengths that are on the outside of the irregular polygon. I need more time to figure out the area. Hope I was able to help at least a bit.

4 0
2 years ago
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Identify the terms of the expression. 3r^2+4r+8
Andreas93 [3]

Answer:

The terms

Step-by-step explanation:

The terms in this expression are coefficients, constants, variables, and exponents. 3 and 4 would be the coefficients. 8 would be the constant. r is the variable and 2 is the exponent.

4 0
2 years ago
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Please help I’m in geometry and I’m so lost
makvit [3.9K]
I have geometry to but i didn’t get to that yet sorry
6 0
2 years ago
Michael will be running a 15 mile road race this weekend how many feet will he run
sergij07 [2.7K]

Answer:

79,200

Step-by-step explanation:

There are 5280 feet in 1 mile, then you just multiply 5280 by the number of miles (15). So 5280 x 15 = 79,200

5 0
3 years ago
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