MATHEMATICS MIDDLE SCHOOL

3x-4y=-31 x=6-y please help

Answers

Answer 1
Answer:

Solve x

Substitute -y+6 for x in 3x-4y=-31

3x-4y=-31

3(-y+6)-4y=-31

Simplify both sides of the equation

-7y + 18 = -31

Add -18 to both sides

-7y+18-18=-31-18

7y= -49

Divide both sides by -7

7y/-7= -49/-7

y= 7

Substitute 7 for y in x = -y+6

x= -y+6

x= -7+6

Simplify both sides of the equation

x= -1

Answer : x= -1 and y = 7


I hope that's help and have a great night !

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Answers

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Rajan bought a suit for rs 2995. he paid 7% sales tax on it. what did he pay in total

Answers

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i hope this be helpful
have a nice day 

When Elmer empties his bank, he found 17 pennies, 4 nickels, 5 dimes, and 2 quarters. What was the value of the coins in his bank?

Answers

Answer:

137

Step-by-step explanation:

Answer:

137

Step-by-step explanation:

17 + 20 + 50 + 50 = 137

Hope this helps

Solve each system of linear equations by substitution.3x - 2y = 9
y = 2x - 7 Pease show all steps

Answers

3x-2(2x-7)=9 \n 3x-4x+14=9 \n -x+14=9 \n -14\ \ \ \ -14 \n -x=-5 \n /-1/-1 \n \ \ x=5
3x-2y=9 will be
3x-9=2y and
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2) y=2x-7

if you mean the intersection , so y=y
(3x)/2-9/2=2x-7
1,5x-4,5=2x-7
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2,5=0,5x
x=2,5/0,5
x=5 is the answer

How many students in the survey said that math was their
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Answers

Answer:20

Step-by-step explanation:

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Answers

87 is Composite, not prime

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