Because they are math buddies say 2x2=4. You can divide 4÷2 and get your original factor (2)... Sorry if it's wrong I think that's what it means ,hope it helps!
Split it up into 3 separate shapes.
Rectangle 1 = 15 x 3 = 45
Rectangle 2 = 3 x 5 = 15
Triangle = 1/2 x 5 x 3 = 7.5
Total area = 45 + 15 + 7.5 = 67.5 cm²
Probability of taking both is the probability of each, multiplied.
.43 x B.E. prob = .062
divide each side by .43
B.E. prob = .144
4(q-10)=76
because the number of questions minus the ten he got wrong times four for each point
