Question

What is the sum of 4.2 × 10^5 and 5.3 × 10^5?

95 × 10^5
95 × 10^10
9.5 × 10^5
9.5 × 10^10

Answer 1

@nermaljean99

Answer 2

alrighty. break it down. 4.2*5.3

Answer 3

22.26

Answer 4

Yep! Now for the next part.

Answer 5

10^5*10^5

Answer 6

10000000000

Answer 7

Haha is that an answer choice?

Answer 8

B?

Answer 9

It says Sum, add them, not multiply

Answer 10

+ not *

Answer 11

Yes. gosh. that stupid mistake...

Answer 12

so B

Answer 13

yes sorry about the first part. I have dyslexia

Answer 14

So it will be\[(4.2\times10^5) + (5.3\times10^5)=10^5(4.2+5.3)=9.5\times10^5\]
The third choice.

Hope that helps

Answer 15

No problem.