0.625 dozen
1/12 x 7.5
= 0.625
3 1/100
anything before the dot is considered your whole number and anything after the dot is your fraction
Part A: Charlie's answer is incorrect
In step 2 of Charlie's answer he subtracted 5 from each side. Since 5x is multiplication, he must DIVIDE each side by 5 to get x by itself. The problem should have worked out like this...
Step 1: 5x = 30
Step 2: x = 30/5
Step 3: x = 6
Part B: There is only 1 solution for this problem.
Um the angle is 72. No ladder can make an angle of 72. Anyway trigonometry is the only way to solve this.
The function is sin. Sin(72)= opposite/5(hypotenuse)
5sin(72)=4.76 metres to 2 decimal places
And that’s what the children should do
