3 years ago

Somebody help me with this 30 points ☺️

Mathematics

1 answer:

brilliants [131]3 years ago

8 0

Answer:

4r- 21

Step-by-step explanation:

4 - r= r and r+ 21/= R21 and Simplified Is -4 and R21

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hammer [34]

y^2+9y+20
y^2+10y+21
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Step-by-step explanation:

(y+5(y+4) =y(y+4)+5(y+4) =y^2+4y+5y+20 =y^2+9y+20
(y+3(y+7) =y(y+7)+3(y+7) =y^2+7y+3y+21 =y^2+10y+21
(y+3)(y-1)

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=y^2-y+3y-3

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Shtirlitz [24]

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Suppose that 15 inches of wire costs 45 cents. At the same rate, how many inches of wire can be bought for 24 cents? Please help

Tanya [424]

$15\ inches\ cost\ 45\ cents\\
x\ inches\ cost\ 24\ cents\\\\
proportion:\\
15-45\\
x-24\\\\
cross\ multiplication\\\\
15*24=45x\\\\
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mars1129 [50]

Answer: Undefined

Step-by-step explanation:

Slope=rise/run

For vertical lines, there is no "run" so the bottom of the slope fraction would be 0. Dividing anything by 0 is always undefined.

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Nesterboy [21]

Answer:

Step-by-step explanation:

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