Question

9. (8.2 x 10-¹) + (-2.04 x 10¹)

Please help and please put the steps on how it’s done I have to show work for this problem thank you

Answer 1

-979/50

Explanation:

heres how i got that answer

first step

remove unnecessary parentheses. any expression raised to the power of 1 equals its self so 8.2 × 10^-1 + ( - 2.04 × 10 )

second step

convert the decimal 8.2 into a fraction 41/5 any expression raised to the power of -1 equals it's recip

rocal so now you have 1/10 now multiple 2.04×10 giving you 45/5 × 1/10 + ( -20.4)

third step

45/5 × 1/10 = 45/50 then convert your decimal into a fraction giving you 45/50 - 102/5

last step

subtract your fractions giving you

- 979 over 50