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Makovka662 [10]
3 years ago
14

What is the y-coordinate of the solution to this system of equations? 5x-8y=1 3x+6y=-21

Mathematics
1 answer:
Vanyuwa [196]3 years ago
6 0

5x-8y=1...(1)
3x+6y=-21...(2)

(1)*3:
15x-24y=3...(3)

(2)*5:
15x+30y=-105...(2)

(3)-(2):
15x-24y-(15x+30y)=3-(-105)
15x-24y-15x-30y=108
-54y=108
y=-2
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Answer:

20,475\ ways

Step-by-step explanation:

we know that

<u><em>Combinations</em></u> are a way to calculate the total outcomes of an event where order of the outcomes does not matter.

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In this problem

n=28\\r=4

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simplify

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D)

Step-by-step explanation:

Because

a)  10 = 2(5) = 10

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3 years ago
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3/6 is 1/2 and 5/12 is smaller than 1/2

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