a) substitution (refer to statements 1 and 2)
b) definition of supplementary
c) subtraction property of equality
Step-by-step explanation:
x = n of years of mary
x+8= n of years of her bro
So her brother is (x+8)/x times as old as Mary
The ration of a triangle is the same as a is to b as b is to c and c is to a.
Answer:
1 2/7
Step-by-step explanation:
4.5:3 1/2
45/10 ÷ 7/2
45/10 x 2/7
90/70=9/7
=1 2/7