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sdas [7]
3 years ago
15

Someone plz help on # 15 (idk what to do) :/

Mathematics
1 answer:
aleksklad [387]3 years ago
4 0

Answer:

2x-5= -20

move -5 to the other side

sign changes from -5 to 5

2x-5+5= -20+5

2x= -15

divide by 2 for both sides

2x/2= -15/2

cross out 2 and 2, divide by 2 and 2 and then becomes x

x= -15/2

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Explain how to get the slope equation for (1,2) and (3,8)
olga2289 [7]

Answer:

8-2/3-1

Step-by-step explanation:

slope equation is y2-y1 over x2-x1 so in that case you would put on top the 8-2 and then for the bottom you would put the 3-1

5 0
3 years ago
-5x+8y=5 need answer
adoni [48]

Answer: x=\frac{8}{5}y-1



Step-by-step explanation:

-5x+8y=5

-5x+8y+-8y=5+-8y

-5x=-8y+5

\frac{-5x}{-5} = \frac{-8y+5}{-5}

x=\frac{8}{5} y-1

8 0
3 years ago
12 - (-4) = ? AND how do I solve it?
iVinArrow [24]
48, multiply -1 by -4 then multiply 4 by 12
PEMDAS
6 0
3 years ago
Read 2 more answers
Can somebody solve this question?
lawyer [7]

Answer:

3 is the answer because it's value only add by the 3

8 0
2 years ago
What is the length of AB? please help!
ira [324]

Answer:

AB = 12

Step-by-step explanation:

Since the triangle is isosceles, the sides AB and BC are congruent. Then you have ...

4x = 2x+6

2x = 6 . . . . . . subtract 2x

4x = 12 . . . . . .multiply by 2

The side AB has length 12.

3 0
3 years ago
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