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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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Fudgin [204]

Answer:

x meters= 35

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Step-by-step explanation:

x + 5x + (6x - 8)= 412

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Please help me asap<br> math
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Step-by-step explanation:

First, find out how many gallons of gasoline she can buy with $18.50 by dividing 18.50 by 1.25 to get 14.8 gallons. Then, since he already has 6 gallons in his tank, add 6 to 14.8 = 20.8. Finally multiply this by the ratio of gallons to miles (23) to get 478.4

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Answer:

9 mph

Step-by-step explanation:

-let x be the speed of current and t be time. The speed equation for both directions can then be represented as:

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#Since t is equal in both, we can do away with t.

#We the divide the downstream equation by the upstream equation as:

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