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jolli1 [7]
3 years ago
14

What is this (please)

Mathematics
2 answers:
REY [17]3 years ago
7 0

Answer:

A) y=-4/5

Step-by-step explanation:

When you have two fractions equal to one another, the easiest thing is often to cross multiply. To do this, multiply the top of the left fraction by the bottom of the right fraction, and then multiply the bottom of the left fraction by the top of the right side and put them equal to eachother:

\frac{a}{b} = \frac{c}{d} \\ad=bc

Knowing this, and some algebra, we can solve the question:

\frac{7y+4}{y+2} =\frac{-4}{3}

(7y+4)(3)=(y+2)(-4)

21y+12=-4y-8

21y+4y=-8-12

25y=-20

y=-4/5

artcher [175]3 years ago
5 0
A) Y= -4/5
Hope that helps!!!
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Answer: d. He multiplied when he was supposed to divide

Step-by-step explanation:

He just multiplied across when he was supposed to divide (or cross multiply) to find the unit rate :)

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3 years ago
Solve the system of equations by graphing on your own paper. What is the x-coordinate of the solution?
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Y = x + 7 
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I have attached a graph of the two equations since the question really wanted you to graph it and then find the answer.</span>

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