ejsteel2
06.07.2019 •
Mathematics
The surface area of the moon is 37,932,330km squared. calculate the side length of a square with the same area.
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Ответ:
length² = 37 932 330
length = √37 932 330
= 6160 km (to three signifcant figures)
The side length of a square with the same area would then be 6160 km.
Ответ:
x=4 , y=-1
Step-by-step explanation:
X-y=5
X+y=3
If 1 and 2 are added then y will be eliminated
(1)+(2) gives : 2x=8 then x=4
Now substitute this value of x into either of the 2 equations and solve for y.
Let x=4 in (1) =4-y=5 = y=-2