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Alenkinab [10]
3 years ago
6

3x+y=5  2x-2y=-2 solving systems of equations

Mathematics
2 answers:
8_murik_8 [283]3 years ago
7 0
3x+y=5
2x-2y=-2
x+3y=7
x+3y-3y=7-3y
x=7-3y
3(7-3y)+y=5
21-9y+y=5
21-8y=5
21-21-8y=5-21
8y=-16
8y/8=-16/8
y=-2
x=7/3


yarga [219]3 years ago
4 0
3x+y=5 \ \ /*2 \\ 2x-2y=-2 \\ \\ 6x+2y= 10\\ 2x-2y=-2 \\ + ----- \\8x=8 \ \ / :8\\x=1 \\ \\3*1+y=5 \\ y=5-3\\y=2\\ \\ Answer : \\ \\ x=1 \\ y=2
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3 years ago
A video game box is 15 inches long and 10
Bumek [7]

Answer:

The box is 5 inches tall

Step-by-step explanation:

The given dimensions of the video games are;

The length of the video game, L = 15 inches

The width of the video game, W = 10 inches

The volume of the video game box, V = 750 cubic inches

Assuming that the shape of the video game box is a cuboid, we have;

The formula for the volume of a cuboid, V = Length, L × Width, W × Height, H

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The height of the cuboid, H = V/(L × W)...(1)

Where, for the video game box;

L = Length = 15 in.

W = Width = 10 in.

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Plugging in the values of the variables in equation (1) gives;

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3 years ago
Rory was with some friends outside an ice cream parlor. He noticed that one out of every four people bought a vanilla cone. He w
suter [353]

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Step-by-step explanation:

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3 years ago
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3 years ago
Hola me pueden ayudar con matematica ​
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3 years ago
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