Amelie solves the following system of equations.
x+y=20
3x-3y+30
which values of x and y satisfy this system of equations?
x = 0, y = 20
x = 5, y = 15
x = 10, y = 0
x = 15, y = 5

x = 15, y = 5

Step-by-step explanation:

The given system is

Multiplying 3 on both sides of equation (1), we get

Now, adding (2) and (3), we get

Substitute the value of x in (1), we get

Hence, the of x and y satisfy this system of equations is x = 15, y = 5.

v = 1/3 a^2h

step-by-step explanation:

the volume is 1/3 a^2h.

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step-by-step explanation: