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3 years ago

X=2y-4 7x+5y=-66 solve by elimination

Mathematics

1 answer:

Alexxandr [17]3 years ago

3 0

Answer:

{x,y}={-8,-2}

Step-by-step explanation:

[1] x = 2y - 4

Plug this in for variable x in equation [2]

[2] 7•(2y-4) + 5y = -66

[2] 19y = -38

Solve equation [2] for the variable y

[2] 19y = - 38

[2] y = - 2

By now we know this much :

x = 2y-4

y = -2

Use the y value to solve for x

x = 2(-2)-4 = -8

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Answer:

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Step-by-step explanation:

Given that :

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3 years ago

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tigry1 [53]

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Step-by-step explanation:

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3 years ago

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ss7ja [257]

Answer:

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Step-by-step explanation:

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3 years ago

Consider a regular pyramid A with a square base and a right circular cone B.

Angelina_Jolie [31]

Answer:

Pyramid

Step-by-step explanation:

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Given that the two solids have the same volume

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If the length of a side of the square base of pyramid A is the same as the base radius of cone B. i.e l=r

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If the height of the cone is 1

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4 years ago

There are 55 roses in five bouquets. What is the unit rate?

dem82 [27]

The answer is D. 11 roses per bouquet.

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Hope this helps :)

4 0

3 years ago

Read 2 more answers