Question

PLEASE HELP ME AND SHOW YOUR WORK :)

Answer 1

1.5 x
`10^(6)`

Explanation:

Ok so what you want to know before you start this is that 1.25 x10^6 is really

1250000 you just move the decimal place 6 places back; if it was a -6 you would move the decimal place 6 places forwards.

1,250,000+ 250,000 = 1,500,000

then to convert back to scientific notation just move to the first number and place the decimal then count the zeros.

EX:

1.500000 --count zeros + the 5 because you moved the decimal in front of it too, and you are left with =

1.5 x 10^6