4 years ago

X+3y=-5 4x-y=6 Solve using elimination

Mathematics

1 answer:

Airida [17]4 years ago

4 0

x+3y=-5

4x-y= 6

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-4(x+3y=-5)

4x-y=6

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-4x-12y=20

4x-y=6 the 4 y's will eliminate each other

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0 -13y=26

-13y=26

y=26/-13

y=-2

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How do you solve 800m 35cm-154m 49cm for the smaller unit?

bearhunter [10]

1 m = 100 cm
800 m = 800 x 100 = 80000 cm
Therefore, 800 m 35 cm = 80000 cm + 35 cm = 80035 cm

Also, 154 m = 154 x 100 = 15400 cm
Therefore, 154 m 49 cm = 15449 cm

Therefore, <span>800m 35cm - 154m 49cm = 80035 cm - 15449 cm = 64586 cm = 645m 86cm</span>

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3 years ago

Find the area of the circle. Round to the nearest tenth.

Lerok [7]

Answer:

283.5

Step-by-step explanation:

A=πr^2

A=π(9.5^2)

A=π(90.25)

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