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makvit [3.9K]
3 years ago
12

I don’t understand this!!

Mathematics
1 answer:
Tju [1.3M]3 years ago
5 0

Answer:

j = 8

Step-by-step explanation:

solve for j by simplifying both sides of the equation, then isolating the variable.

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Solve each system by substitution
Ira Lisetskai [31]

Answer:

1. 2x + 3y =22

y=4

C. (5,4)

2. y=0

-5x - 2y = -15

B. (3,0)

Step-by-step explanation:

2x+(3)(4)=22

Step 1: Simplify both sides of the equation.

2x+12=22

Step 2: Subtract 12 from both sides.

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Step 3: Divide both sides by 2.

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====================================================================

−5x−(2)(0)=−15

Step 1: Simplify both sides of the equation.

−5x−(2)(0)=−15

−5x+0=−15

(−5x)+(0)=−15(Combine Like Terms)

−5x=−15

−5x=−15

Step 2: Divide both sides by -5.

−5x/−5 = −15/−5

x=3

4 0
3 years ago
Determine the slope of the line that is perpendicular to the line y = -7x - 12.
Mnenie [13.5K]

Answer:

None of these answers are correct.

Step-by-step explanation:

Perpendicular lines have opposite and reciprocal slopes, which means that we take the slope and we flip it. After we've done that, we change the sign.

Since the original slope is -7, first we flip it and get -1/7. Now we change the sign and get 1/7. Therefore, the perpendicular slope of this line would be 1/7

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3 years ago
John playing with his friends a game where you need to get 20 points to win. In the start of the game John lose 10 points and th
zloy xaker [14]

Answer:

2

Step-by-step explanation:

0 - 10 = -10

-10 + 12 = 2

John has 2 points

3 0
3 years ago
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