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ra1l [238]
2 years ago
12

Please help quickly !

Mathematics
1 answer:
zepelin [54]2 years ago
3 0

Answer:

see below

Step-by-step explanation:

1/4x = -5/8

We want to isolate x

Multiply each side by the reciprocal of 1/4 to isolate x

Multiply each side by 4/1 or 4

4*1/4x = 4 * -5/8

x = -20/8

Simplify the improper fraction by first dividing by 4 on the top and bottom

x = -5/2

Change the improper fraction to a mixed number

x = -2 1/2

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Subsubstitution solving for x ​
yuradex [85]

y = 8x - 18

2x - 8(8x - 18) = 20

2x + -64x + 144 = 20

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x = 2

6 0
3 years ago
Help me plz 8th grade math need answers quick
mixer [17]

Answer:

25. Not a solution

26. Yes a solution

27. y= 2/3 x

28. y=3x+16

Step-by-step explanation:

25. The solution to a linear equation is the point (x,y). To find if an (x,y) is a solution, substitute it into the equation and see if it works.

y=4x-4 and (8,3)

3=4(8)-4

3=32-4

3=28

False

Not a solution.

26. Repeat 25 to solve 26 with y=5x-5 and (0,-5)

y=5x-5 and (0,-5)

-5=5(0)-5

-5=0-5

-5=-5

True

Yes a solution.

27. This line crosses through the origin is proportional and therefore has the form y=mx. It also has a gentle slant meaning that is less than 1/2 and goes in a positive direction. This means it is y=2/3 x.

28. Use inverse operations to rearrange the equation.

y-3x=16

y=16+3x

y=3x+16

8 0
3 years ago
Which unit rates would be appropriate for describing the speed of cars in a race?
vodomira [7]
I would think miles per hour would be the best units to use because that is what the speedometer of a car is read in. Hope this helped! comment back with any questions you still have!
7 0
3 years ago
What percent of 25 is 5
beks73 [17]
I hope this helps you

5 0
3 years ago
Helppp me please will give brainliest ​
iVinArrow [24]

Answer:

y=-2x+11

Step-by-step explanation:

5 0
2 years ago
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