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Rudiy27
3 years ago
5

What is the value of x in the equation 3x - y = 18, when y= 27? O 5 O 7 O45 O 63

Mathematics
1 answer:
forsale [732]3 years ago
8 0

Answer:

Step-by-step explanation:3x-y=18

y=27

Therefore 3x-(27)=18

3x=18+27..Nb when the 27 is now being added instead of subtracted.

3x=45

3x/3=45/3 Nb the 3 is now being divided instead of being multiplied.

Therefore X=15

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Solve by canceling <br><br> -5x+8y=-4<br> 6x-8y=-12
Vinil7 [7]

Step-by-step explanation:

-5x+8y=-4

6x-8y=-12   8y and 8x cancel out

         x=-16

To solve for y, substitute x=-16 back into the first equation

-5(-16)+8y=-4

    80+8y=-4

          8y=-84

            y=-10.5

7 0
3 years ago
40+55h=190 (What is h)
Morgarella [4.7K]
55h + 40 = 190.
55h = 150.
h = 2.73
6 0
3 years ago
help pls I have ask this one so many time and so many time I have gotten the wrong answer can some pls help me?
Veseljchak [2.6K]

Answer:

52pi

Step-by-step explanation:

You need the area of the large grey circle, minus the white circle, plus the small grey

Large grey = 8^2 * pi = 64pi

White = 4^2 * pi = 16pi

Small grey = 2^2 * pi = 4pi

64pi - 16pi = 48pi, 48pi + 4pi = 52pi

4 0
2 years ago
Laurague here is your answer:)
gayaneshka [121]
Got it :)Thank you!!!!!!!
3 0
3 years ago
If michael family has 210 acres and each cow take 1/3 acre of grazing how many cattle could their farmland support
tigry1 [53]
To find the answer,we can divide the arches(210) bythe amount a cattle need( 1/3):

210÷1/3
=210×3
=630

Therefore, the farmland could support 630 cattles.

Hope it helps!
7 0
3 years ago
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