Robert is a boy, so you only need the formula for a boy’s predicted height.
father’s height=x
fathers height=180
so, x=180
mother’s height=y
mother’s height=160
so, y=160
plug in x=180 and y=160 into the formula.
0.4(x+y)+42
0.4(180+160)+42
use GEMDAS to simplify.
G(Groupings)
0.4(180+160)+42
0.4(340)+42
M(Multiplication)
0.4(340)+42
136+42
A(Addition)
136+42
178
The predicted height of Robert when he is an adult is 178 cm.
Answer:
Step-by-step explanation:
(8-0)/(2+2)= 8/4= 2
y - 0 = 2(x + 2)
y = 2x + 4
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