Question

A family refers to a group 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 $310,000, and there were about 8.3 x 10 (7 power) families. Calculate the total family net worth in Country A in 2000.

I am stuck here:
3.1x 10(fifth power) x 8.3 x 10 (7th power)

= 3.1 x 8.3 = 25.73
= 10(fifth power) x 10 (7th power) = 10 (12th power)

=

Answer 1

\[\huge 3,10,000=3.1 \times 10^5\]
and
\[\huge 8.3 \times 10^7\]

just multiply them

Answer 2

\[\huge 3.1 \times 10^5 \times 8.3 \times 10^7\]
\[\huge 3.1 \times 8.3 \times 10^5 \times 10^7\]

Answer 3

can you solve it?? @mister88

Answer 4

That is what I have done so far.

25.73
10(12 power)
25.73 x 10 (12 power)

2,573 plus the 12?

Answer 5

so answer will look like this :
\[\huge 25.73 \times 10^{12}\]
it is also written as :
\[\huge 2.573 \times 10^{12-1}=2.573 \times 10^{11}\]

Answer 6

hope you understand . @mister88

Answer 7

I wasn't sure about adding or subtracting the one?

Answer 8

no, when we move the decimal point to left by one place, the power of 10 will decrease by 1

Answer 9

understood or not? @mister88

Answer 10

Okay that is the part that I forgot about....Thanks

Answer 11

welcome :)