[qwertyuioop]

ik no how 2 do the whole thing besides part of the last step
(7.82 x 10^4)(3.4 x 10-9)
26.588 x 10^-5
2.6588 x 10^-4
2.7 x 10-9
I don't know if the last part is correct??

[ebaines]

ik no how 2 do the whole thing besides part of the last step
(7.82 x 10^4)(3.4 x 10-9)
26.588 x 10^-5
2.6588 x 10^-4

So far so good...

2.7 x 10-9

When you rounded the value of 2.6588 to 2.7 why did you change the exponent from -4 to -9? Just leave it as -4.

[qwertyuioop]

Oh you duh!! Thanks!