The linear relationship should be
AGE
16 ,17 ,18 ,19 ,20
162,171,180,189,198
WEIGHT
His weight should be going up 9 pounds per birthday
3. 3.1, 3 1/4, 3 3/10
4. 5.5 ft, 70 inches (5.8 ft), 2 yards (6 ft)
Answer:
The fraction equivalent to 2:5 are
4:10
6:15
8:20 etc.
Equivalent fractions have the same value in the reduced form.
Let t and s represent the masses of 20% and 60% alloys respectively.
t+s=80, s=80-t
(0.2t+0.6s)/80=0.52 multiply both sides by 80
0.2t+0.6s=41.6, now using s=80-t in this equation gives us:
0.2t+0.6(80-t)=41.6 perform indicated multiplication on left side
0.2t+48-0.6t=41.6 combine like terms on left side
-0.4t+48=41.6 subtract 48 from both sides
-0.4t=-6.4 divide both sides by -0.4
t=16, since s=80-t
s=64
So 16kg of 20% alloy is mixed with 64kg of 60% allow to make 80kg of a 52% alloy.
Answer: 1.87500 or 15/8 simplified 1 7/8
Step-by-step explanation:
