Multiply or divide and write scientific notation for the result.
-$$\frac { 20 \times 10 ^ { - 9 } } { 5 \times 10 ^ { - 6 } }$$
A) $4 \times 10 ^ { - 15 }$
B) $8 \times 10 ^ { - 15 }$
C) $4 \times 10 ^ { - 3 }$
D) $8 \times 10 ^ { - 3 }$

Question

Quizplus · Accepted Answer

When dividing in scientific notation, you divide the coefficients (20/5 = 4) and subtract the exponents of 10 (-9 - (-6) = -3), resulting in $4 \times 10^{-3}$.

Multiply or Divide and Write Scientific Notation for the Result 20×10−95×10−6\frac { 20 \times 10 ^ { - 9 } } { 5 \times 10 ^ { - 6 } }5×10−620×10−9​

Multiply or Divide and Write Scientific Notation for the Result $\frac { 20 \times 10 ^ { - 9 } } { 5 \times 10 ^ { - 6 } }$