Write two equations with the given information:
1) x = 2y ( x is twice the value of y)
2) x + y = 42
Replace x in the second equation with the value of x in the first equation:
2y + y = 42
Simplify:
3y = 42
Divide both sides by 3:
y = 42 / 3
y = 14
Now we have the value for Y, solve for x by replacing y with 14:
x = 2y
x = 2(14)
x = 28
X = 28 and y = 14
Step-by-step explanation:
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Set up a proportion here as the height over the shadow of the adult = to the height over the shadow of the baby. so you have 12/4.8 = height/2. cross multiply to get 12*2=4.8 times height, which is 24 = 4.8*height. divide both sides by 4.8 to get height = 5 feet
Answer:
The answer to your question is: y = 3x + 1
Step-by-step explanation:
Data
slope = m = 3
y-intercept = (0, 1)
Formula
(y - y1) = m(x - x1)
(y - 1) = 3(x - 0)
y - 1 = 3x
y = 3x + 1
sorry i don't know. this answer.