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Dmitriy789 [7]
3 years ago
9

Use either substitution or elimination to solve the following system of equations, find the solution. Show all of your work.

Mathematics
1 answer:
stiv31 [10]3 years ago
7 0
Elimination:

-5 (7x+4y=-5) -35x + -20y = 25
4 (-2x+5y=26) -8x + 20y = 104

Y's cancel out

-43x = 129 Divide each side by -43

X = -3

7(-3) + 4y = -5
-21 + 4y = -5 Add 21 to each side
4y = 16 Divide each side by 4
y = 4
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Answer:

24+9x=5

Step-by-step explanation:

First you need to find the least common multiple of the denominators of the fractions. In this case, it would be 12. Then, multiply the entire equation by this number.

2*12=24,

3/4*12=36/4=9,

5/12*12=60/12=5.

Using these values will give your final equation: 24+9x=5

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Step-by-step explanation

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kifflom [539]

Answer:

markup price = $25.31

retail price = $59.06

Step-by-step explanation:

Markup price is 75% OF 33.75

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Thus,

markup price = $25.31

retail price = $59.06

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4 years ago
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Answer:

idk

Step-by-step explanation:

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so its 2x then squared by 2 then y and squared by 3 all together making 2x^2y^3

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