Answer:?
Step-by-step explanation:
Answer:
Step-by-step explanation:
let side of cube=x cm
volume=x³ cm³
again side=(x-3) cm
volume=(x-3)³ cm³
x³-(x-3)³=1385
(a³-b³)=(a-b)(a²+ab+b²)
(x-x+3){x²+x(x-3)+(x-3)²}=1385
3(x^2+x²-3x+x²-6x+9)=1385
3(3x²-9x+9)=1385
9x²-27x+27=1385
9x²-27x+27-1385=0
9x²-27x-1358=0

Answer:
7/4
Step-by-step explanation:
Answer:
Step-by-step explanation:
If you add 13 +15 you get 28$ if we were to write that as an integer out of 20 it would be 28/20 but as an improper fraction, it would need to be simplified into 1 and 8/20 ( 1 8/20)
If you are looking how much she lost out of the 20 she lost today it would be 13/20
Hope this helps
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Answer:
Step-by-step explanation:
he is going adding 3 to each number ex.
5+3=8
8+3=11
11+3=14
14+3=17
and so on