Question

find a simplified form of the expression. give your answer in scientific notation

(3 x 10^8)x(9x10^7)

Answer 1

you just have to multiply the bases.
3 x 9 = ?
add the exponents of the base 10
10^8(10^7)= 10^(8+7)

Answer 2

thats it ?

Answer 3

You will have it as
\[27 \times 10^{15}\]
But since you are to have it in scientific notation and the rule to expressing numbers in scientific notation states that the factor to be multiplied by 10^n is more than or equal to 1 but less than 10. Then you'll have it as
\[2.7 \times 10^{16}\]

Answer 4

can you help me with another one