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sammy [17]
3 years ago
8

Solve..........20 = 5x + 10y

Mathematics
1 answer:
kvv77 [185]3 years ago
6 0

5x + 10y = 20

-5x + 20 = 10y

-x/2 + 2 = y

y = 2 - x/2

20 - 10y = 5x

4 - 2y = x

x = -2y + 4

Answer:

x = -2y + 4

y = 2 - x/2

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In ΔDEF, what is sin D, in simplified form?
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Step-by-step explanation:

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5 0
3 years ago
Read 2 more answers
Sentence.
Zarrin [17]

Answer:

25

Step-by-step explanation:

We need to set up a system of equations, then solve for the number of board markers.

Let r represent red pens, let b represent board markers.

She has 41 items, so our first equation is r+b=41.

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6 0
3 years ago
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