From a class of 20 students we need to select 3 for a committee, one to be president, another to be vice-president and the third to be secretary. In how many ways can this be done?.

x=17

step-by-step explanation:

solve 3x-24=x+10

then that makes it 2x=34 because you subtract an x from both sides to get rid of the one on the right, and then you add 24 to both sides to get rid of the 24 on the left

divide by both sides by 2 to get your answer so that you can get your answer

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled