Mathematics: Explain how you can use a quick picture to find 3×2.7

Explain how you can use a quick picture to find 3×2.7

Ответ:

Bekks

01.01.2022

If you want to find 3*2.7 with a picture, you could draw 2 rectangles divided into 10 parts shaded in and then the same rectangle with only 7 out of the 10 parts shaded in. Then do the same thing 2 more times. That should help.

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Ответ:

soliseric879

11.07.2022

Mathematics

1x+1y=-2
2x-3y=-9

x = -2 - y

substitute x = -2 - y into 2x-3y=-9
2x-3y=-9
2(-2 - y)-3y=-9
-4 - 2y - 3y = -9
-4 - 5y = - 9
5y =5
y = 1

x = -2 - y
x = -2 - 1
x = -3

answer (-3,1)

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