Question

Miranda is adding the numbers below.

What is the sum written in scientific notation?

A.


B.


C.


D.

Answer 1

@AmyRoseRules

Answer 2

@pooja195

Answer 3

what grade are you in because i can try to help you but you have to help me out as well

Answer 4

8th

Answer 5

ok i might know you i am in 8th as well my name is Mary

Answer 6

my name is james do u do k12

Answer 7

yes

Answer 8

ok cool

Answer 9

k so you would do 2.9*10=29

Answer 10

29

Answer 11

then you would do 5,35*10=53.5

Answer 12

ok now the fun part

Answer 13

ok james are you understanding what i am doing?

Answer 14

yes

Answer 15

ok i did it wrong to a point.
If you add 2.9+5.35
what would you get?

Answer 16

8.25

Answer 17

ok that is right

Answer 18

ok so what do i do next

Answer 19

ok so what would you say you would do next?

Answer 20

your answer would be D

Answer 21

ok thank u

Answer 22

think of the \(10^{10}\) as, say, a variable
thus \(\bf 2.9\times 10^{10}+5.35\times 10^{10}\qquad say\quad 10^{10}=a
\\ \quad \\
2.95a+5.35a\cdot (2.95+5.35)a\implies (8.25)a\implies 8.25\times 10^{10}\)

Answer 23

ya you can think of it that way as well

Answer 24

lol