Evaluate and write your answer in scientific notation:(7 x 10-2)(1.5 x 10-3)
10.5 x 10-5
10.5 x 106
1.05 x 10-4
@marissalovescats
i think its the first one but im not so sure

Question

Evaluate and write your answer in scientific notation:(7 x 10-2)(1.5 x 10-3)
    10.5 x 10-5 
   10.5 x 106 
   1.05 x 10-4 
@marissalovescats 
i think its the first one but im not so sure

marissalovescats · Answer

Okay with these, 1st thing you do it times the ACTUAL numbers. So what is 7x1.5?

anonymous · Answer

10.5

anonymous · Answer

@marissalovescats

marissalovescats · Answer

One sec I'm trying to remember the rule lolo.

skullpatrol · Answer

$$(7 * 10^{-2})(1.5 * 10^{-3})$$

marissalovescats · Answer

I believe you add the exponents when they are being multiplied. So that would be -2+-3

anonymous · Answer

what is did was 7*1.5=10.5
then you add the expontents -2+13=-5, 
so i thought it was A

marissalovescats · Answer

I believe you are correct.

anonymous · Answer

Okay i was just wondering because u said that there can only be 1number infront of the decimal.

skullpatrol · Answer

"write your answer in scientific notation:"

anonymous · Answer

10.5*10^-5

anonymous · Answer

@skullpatrol

skullpatrol · Answer

Okay i was just wondering because u said that there can only be 1DIGIT in front of the decimal.

anonymous · Answer

that's what i thought but im wrong, i think i got it right!

skullpatrol · Answer

$$1.05 * 10^{-4}$$

anonymous · Answer

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