A family refers to a groups of two or more people related by birth, marriage, or adoption who reside together. In 2000, in Country A, the average family net worth was $440,000, and there were about 6.9 x 10^7 families. Calculate the total family net worth in Country A in 2000. (Use scientific notation. Round to the nearest tenth as needed.)

Question

anonymous · Answer

Can someone please help me solve this?

unklerhaukus · Answer

$$$440,000\times6.9 \times 10^7$$$$=$4.4\times10^5\times6.9 \times 10^7$$$$=$4.4\times6.9 \times10^{5+7}$$

and you'll have to divide/multiply by 10 , because scientific notation has only one numeral before the decimal place

anonymous · Answer

@UnkleRhaukus Thank you for you help thus far, but what do you mean by divide/multiply? Sorry I'm confused.

unklerhaukus · Answer

do you have the step before that 
$$=$4.4\times6.9 \times10^{5+7}$$
$$=$$

anonymous · Answer

$$30.36^{12}$$ ? i dont know if i am doing this right.

unklerhaukus · Answer

$$=$4.4\times6.9 \times10^{5+7}$$$$=$30.36\times10^{(5+7)}$$$$=$3.036\times10^{(5+7+1)}$$

anonymous · Answer

$3 x 10^13

unklerhaukus · Answer

yeah that is your final solution,

did you understand why we had to do the divide/multiply by 10 part?

anonymous · Answer

I think so, because the number needed to be rounded to the tenth place.

unklerhaukus · Answer

yeah

anonymous · Answer

Thank you for your help. I understand it a lot better now.