cxttiemsp021
24.01.2020 •
Mathematics
Me, i really need with these. dont answer if you dont know how. i really need
if a ii b what is the value of x?
answer for each .
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Ответ:
5x + 15 =115
5x = 100
x = 20
2)
4x+28=68
4x = 40
x = 10
3)
10x-40=50
10x = 90
x = 9
4)
10x-40+50=180
10x+10=180
10x = 170
x = 17
5)
6x-10 +3x+100 = 180
9x+90=180
9x = 90
x = 9
Ответ:
6 faces
Step-by-step explanation:
Step 1: Find the amount of faces
A face is a side of a 3 dimensional figure.
There is one on top and one on bottom. There is one in the front and one in the back. There is one on the right and one on the left.
1 + 1 + 1 + 1 + 1 + 1 = 6
6 faces