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How many significant figures should I include in my answer?

If the answer is a decimal, you start from the left and ignore any 0s- only count numbers that are not 0. For example, 0.0002 is to 1 significant figure even though there are 3 zeros before the 2. If the ans...
YD
Answered by Yatsha D. • Maths tutor
4718 Views

Make s the subject of :v^2 = u^2 +2*a*s

v^2 = u^2 +2 a s, v^2-u^2 = 2 a s, (v^2-u^2)/2*a = s, End
PS
Answered by Phillip S. • Maths tutor
6698 Views

Make x the subject of the formula when: y = 6-2x / 8

The first step is to multiply both side by 8, as this will cancel out the 8 that is beneath the 6-2x. This will then make the equation look like this: 8y = 6-2x. As we are making X the subject of the formula...
EW
Answered by Elia W. • Maths tutor
5129 Views

Solve the simultaneous equations 5x + y = 21 x - 3y = 9

To solve simultaneous equations we want to use only one variable so either x or y. Therefore we need to eliminate (get rid of) one of the variables .If you multiply x - 3y = 9 by 5 you will get 5x - 15y = 45...
AH
Answered by Amelia H. • Maths tutor
15978 Views

Azmol, Ryan and Kim each played a game. Azmol’s score was four times Ryan’s score. Kim’s score was half of Azmol’s score. Write down the ratio of Azmol’s score to Ryan’s score to Kim’s score.

4:1:2
KP
Answered by Keena P. • Maths tutor
6608 Views