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aleksandrvk [35]
3 years ago
5

How to do substitution method

Mathematics
1 answer:
Nataly_w [17]3 years ago
8 0

just switch two numbers / signs

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Vikki [24]

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1. $58650

Step-by-step explanation:

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3 years ago
Victoria searched her house for quarters. She started with 17 quarters and found 6 more quarters. She then goes to the arcade. I
Viefleur [7K]

Answer:

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Step-by-step explanation:

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X + 7y = "70" 3x − 6y = −33 step by step
Aneli [31]

Answer:

x=7

y=9

Step-by-step explanation:

x+7y=70   ...(1)

3x-6y=-33

divide by 3

x-2y=-11   ...(2)

(1)-(2) gives

x+7y-x+2y=70+11

9y=81

y=9

x-2*9=-11

or x=-11+18=7

3 0
3 years ago
Mary can paint a house by herself in 12 hours. john can paint a house by himself in 16 hours. how long would it take them to pai
QveST [7]
1/12+1/16=1/n
4/48+3/48=1/n
7/48=1/n
48=7n
n=48/7 hours to paint the house if they worked together
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5 0
3 years ago
Find the angles marked with letters. <br>Please help!! ​
Paladinen [302]
A=34°
B=76°
C and d = 70°
because a triangle is 180° and we know
a+b+c=180
76+34=110
180-110=70
3 0
3 years ago
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