Answer:
1.Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
1.332×10^4
Remove parentheses.
4.6⋅10^3+8.72⋅10^3
Factor 10^3 out of 8.72⋅10^3
4.6⋅10^3+10^3⋅8.72
Factor 10^3 out of 4.6⋅10^3
10^3⋅4.6+10^3⋅8.72
Factor 10^3 out of 10^3x8.72
10^3⋅4.6+10^3(8.72)
Factor 10^3 out of 10^3⋅4.6+10^3(8.72)
10^3⋅(4.6+8.72)
Simplify the expression.
Reorder 10^3 and 4.6+8.72 (4.6+8.72)⋅10^3
Add 4.6 and 8.72
13.32⋅10^3
Write
13.32⋅10^3
in proper scientific notation.
1.332⋅10^4
2.Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
3.07×10^−4
Step-by-step explanation: