Question

if 7 is a number is tripled then its cube is 27 time the cube of given number​

Answer 1

Step-by-step explanation:

by taking x

cube of x=x * x * x = x^3

if x is tripled it is equal to 3x.

cube of 3x= 3x*3x*3x=27x^3

27x^3/x^3= 27

hence proved that if a no. is tripled it's cube is 27 times the cube of the no.

Taking 7

cube of 7=7*7*7=343

if 7 is tripled it becomes 21

cube of 21=21*21*21= 9261

9261/343=27

hence proved that is a no. is tripled it's cube is 27 times the cube of the original no

Note - * refers to multiply

Hope it helps :)