3rd is 1.86 * 10^6
4th is 1.53 * 10^7
(3.0 x 10^4 ) ÷ (6.2 x 10^1) =
18.6x10^3
(4.7 x 10^-3 ) ÷ (9 x 10^-4) =
42.3x10^-7
(3.0 x 10^4 ) x (6.2 x 10^1) =
18.6x10^3
(5.1 x 10^2 ) x (3 x 10^4) =
15.3x10^-2
9 answers
I don't see a question.
a and b you multiplied instead of dividing.
c and d the digits are right, the exponents are wrong and number of significant figures is wrong.
a and b you multiplied instead of dividing.
c and d the digits are right, the exponents are wrong and number of significant figures is wrong.
oh the question is to multiply and divide the significant figures
ohh my mistake i thought i divided
ohh my mistake i thought i divided
so is this correct?
3rd is 1.86 * 10^6
4th is 1.53 * 10^7
3rd is 1.86 * 10^6
4th is 1.53 * 10^7
idk how you divide it
I posted after your correction.
For c, 1.86E6 is right but you're allowed only two significant figures. You should round the 1.86E6 to 1.9E6
For d, the digits are right but s.f. not. You're allowed 1 so the answer is 1.53E7 which to 1 s.f. I would round to 2E7.
For c, 1.86E6 is right but you're allowed only two significant figures. You should round the 1.86E6 to 1.9E6
For d, the digits are right but s.f. not. You're allowed 1 so the answer is 1.53E7 which to 1 s.f. I would round to 2E7.
so the first one is it 5x10^2?
(4.7 x 10^-3 ) divided by (9 x 10^-4) =
5x10^-6
5x10^-6
No. My calculator gives 5.22 which would round to 1 s.f. to 5.