Question

how do u put this in scientific notation 3x 10^3 +4.0 x 10^4

Answer 1

it equals 43,000 so I would write it 4.3 *10^4...IS that what you're asking?

Answer 2

yes do you know how you figure out the exponents?

Answer 3

Or another way is
3 x 10^3 + 4.0 x 10^4 =
3 x 10^3 + 40 x 10^3 =
43 x 10^3 = 4.3 x 10^4

Or a third way is
0.3 x 10^4 + 4.0 x 10^4 =
4.3 x 10^4

For purposes of using some method to perform significant figures checks, I think the latter is the best.

Answer 4

40,000
+ 3,000
___________
43,000
to determine the exponents you put the decimal after 4. Then count how the spaces to the right after the decimal. your last decimal will be after the 0 = 10^4......does that help?

Answer 5

yes thanks jessica and bob