Question

(3 x 10²) m + (5 x 10²) m

Answer 1

300m+500m=80000m=8x10^4m

Answer 2

the answer is 8 times 10² but i want to know why it isn't to the fourth

Answer 3

oh man i messed up
3x10^2=300
5x10^2=500+
=800=8x10^2m

Answer 4

Ohh so you would not add the two ^2 to make it 4?

Answer 5

\[\huge{10^2 \times 10^2 = 10^{2+2}}\]\[\huge{10^2+10^2=2 \times 10^2}\]

Answer 6

so in this case
=8 x 10^2

Answer 7

\[8 \times 10^{-5} + 8 \times 10^{-5}\]

Answer 8

same thing
add 8+8=16
so 16 x 10^-5

Answer 9

the answer is 1.2 times 10^-4

Answer 10

i don't know how to get it though

Answer 11

1.6 x 10^-4

Answer 12

no.. 1.2 times 10^-4

Answer 13

http://www.wolframalpha.com/input/?i=%288x10^-5%29%2B%288x10^-5%29

Answer 14

its not 1.2 its 1.6

Answer 15

how do you get 1.6 though

Answer 16

8+8=16
so 16 x 10^-5 = 1.6x 10^-4

Answer 17

it's 8 +4

Answer 18

\[8 \times 10^{-5} + 4 \times 10^{-5} ?\]

Answer 19

yes

Answer 20

Sorrry i messed up up there^^

Answer 21

ok since both 10's hav the same exponent u add 8+4=12
so the answer is 12x10^-5 = 1.2x10^-4

Answer 22

A=10^2*m
so it will be:
3A+5A
(3+5)A

same thing wit the other one

Answer 23

thank you so much.