larueeee25
19.07.2019 •
Mathematics
The edge of one cube is 6cm. the edge of a second cube is 5 cm. what is the difference in their volume
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Ответ:
volume of second cube=(5cm)³=125cm³
the difference in their volume=216cm³-125cm³=91cm³
Ответ:
(5,4)
Step-by-step explanation:
10x + 20y = 130
x + y = 9
you can solve by substitution
x = 9 - y
10 (9 - y) + 20y = 130
90 - 10y + 20y = 130
90 + 10y = 130 (subtract 90 from both sides)
10y = 40
y = 4
Plug the answer back in the original equations to solve for x
x + 4 = 9 (subtract 4 from both sides)
x = 5