Which expression is equivalent to (5.4x10^10) (3.3x10^21)?

Although, here are no expressions ! it's an incomplete question. So, showing the answer with general simplification .

Step-by-step explanation:

We have the expression as (5.4x10^10) (3.3x10^21) which can be further simplified as :

⇒(5.4x10^10) (3.3x10^21)

⇒

keep the power terms together and numbers to simply. Hence, we get as below

⇒

⇒

By solving the above, we get final simplified answer as

⇒

Although, here are no expressions ! it's an incomplete question . You may match   to the listed options wherever!

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9