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sladkih [1.3K]
3 years ago
5

3x + 8y = 85 7x -2y =33 (solve the following equations)

Mathematics
2 answers:
Alexxandr [17]3 years ago
8 0
3x+8y=85
7x-2y=33

4(7x-2y=33)
28x-8y=132
+3x+8y=85

31x=217
__ ___
31 31

X= 7

7(7)-2y=33
49-2y=33
-2y=-16
______
-2

Y=8

(7,8)
Stella [2.4K]3 years ago
5 0
What is it that you are looking for ?
x or y ?
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Multiply. (7x-4)(4x-3)
dlinn [17]

<u>Your answer is 28x^2-37x+12</u>

<u>1) Use the FOIL method: (a+b)(c+d)=ac+ad+bc+bd</u>

28x^2-21x-16x+12

<u>2) Collect like terms</u>

28x^2+(-21-16x)+12

<u>3) Simplify</u>

28x^2-37x+12


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Answer:

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5 0
3 years ago
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SashulF [63]

The answers you are looking for are:

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7 0
3 years ago
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I will pay for the answer.
posledela

Answer:

D

8x^2-12x+5

thanx for youer sug

4 0
3 years ago
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