Question

1.) What is the quotient written in scientific notation?



3*10^20 over 4*10^5


A. 7.5*10^3

B. 0.75*10^4

C. 7.5*10^14

D. 7.5*10^15


2.) What is the product written in scientific notation?


(4.5*10^-8) (6*10^-4)


A. 2.7*10^32

B. 2.7*10^-13

C. 2.7*10^-12

D. 2.7*10^-11

Answer 1

3*10^20 over 4*10^5 is written as 7.5*10^14

Answer 2

and... (4.5*10^-8) (6*10^-4) is written as 2.7*10^32. Took this lesson last week on math, k12.

Answer 3

\[\large \bf \frac{3 \times 10^{20}}{4 \times 10^5}\]

Remember :-
\[\large \bf \frac{10^a}{10^b}=10^{a-b}\]

so,we get
\[\large \bf \frac{3}{4} \times 10^{20-5}=0.75 \times 10^{15}\]
then multiply and divide by 10,
\[\large \bf 0.75 \times 10^{15} \times \frac{10}{10}=7.5 \times 10^{14}=\color{red}{Answer}\]

Answer 4

so option C is correct :)

Answer 5

understood? @itsbribro

Answer 6

ohh ok thank you

Answer 7

welcome :)

Answer 8

so can you do your last question self ? @itsbribro

Answer 9

*yourself

Answer 10

yes thank you

Answer 11

welcome