Math

QuestionCompute and express in decimal: 12×1074×102\frac{12 \times 10^{7}}{4 \times 10^{2}}

Studdy Solution

STEP 1

Assumptions1. We are given the expression 12×1074×10\frac{12 \times10^{7}}{4 \times10^{}} and we are asked to simplify it. . We are asked to express the answer in decimal notation.

STEP 2

First, we can simplify the expression by dividing the numbers and the powers of10 separately.
12×1074×102=124×107102\frac{12 \times10^{7}}{4 \times10^{2}} = \frac{12}{4} \times \frac{10^{7}}{10^{2}}

STEP 3

Now, divide the numbers.
12=3\frac{12}{} =3So, the expression becomes3×1071023 \times \frac{10^{7}}{10^{2}}

STEP 4

Next, divide the powers of10. Remember that when you divide with the same base, you subtract the exponents.
107102=1072=10\frac{10^{7}}{10^{2}} =10^{7-2} =10^{}So, the expression becomes3×103 \times10^{}

STEP 5

Finally, express the answer in decimal notation. 10510^{5} means that we have5 zeros after the3.
3×105=300,0003 \times10^{5} =300,000So, 12×1074×102=300,000\frac{12 \times10^{7}}{4 \times10^{2}} =300,000.

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