Question

Which shows the expression below simplified?

0.018 + (3.8 × 10^-3)
A. 3.818 × 10^-3
B. 2.18 × 10^-3
C. 2.18 × 10^-2
D. 3.818 × 10^-5

Answer 1

so what is 3.8x10^-3 look like in decimal form?

Answer 2

0.0038

Answer 3

line the decimals up and add

Answer 4

0.018 + (3.8 * 10^-3) = 0.0218 = 2.18*10^(-2)
C.