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2 years ago

What is the solution for the system of equations? y= 2x - 3 4x - 3y = 31

Mathematics

2 answers:

Arturiano [62]2 years ago

7 0

Answer:

Use Substitution.

Plug in 2x-3 in place of y in the second equation.

4x - 3(2x-3) = 31

4x - 6x + 9 =31

-9 -9

-----------------------

-2x=22 so x=-11

Then, y=2(-11)-3, so y=-25

So the solution would be (-11,-25).

gladu [14]2 years ago

4 0

Answer:

It is easy it is a 2 step equation if you know the 2 four boxes

Step-by-step explanation:

is the variable alone?

what is it attached to?

you always do adding or subtracting first so it is attached to 3

How is it attached?

by subtraction

what is the inverse operation?

it is addition

then all you do is the same thing but with multiplication or division

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Answer:

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2 years ago

What is the surface area of the sphere?

Fantom [35]

Answer:

The surface area of the sphere is 314 mi².

Step-by-step explanation:

According to the given diagram, the diameter of the sphere is 10 mi.

If the radius is $r$ , then diameter $=2r$

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Plugging the value of $r$ into this formula, we will get...

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3 years ago

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ivanzaharov [21]

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answer
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Step-by-step explanation:

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Answer:

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