Answer:
160
Step-by-step explanation:
N * 0.7 = 112
N = 
Well, the box will have 7in long 4 in wide and 2 in high
Answer: x is 12
Step-by-step explanation:
For directly proportional relationship, both variables change in the same direction. It means that an increase in one variable will result to an increase in the other variable. A decrease in one variable will result to a decrease in the other variable.
y and x have a proportional relationship,
We will introduce a proportionality constant and replace the proportionality symbol with an equal to symbol. Thus
y = kx
When y is 12, x is 8
Substituting into the equation,
12 = k × 8
k = 12/8 = 1.5
The equation becomes
y = 1.5x
The value of x when y is 18 will be
18 = 1.5x
x = 18/1.5 = 12
Answer:
D. 7n = 28
Step-by-step explanation:
Let's substitute 4 for n in each equation to check if it the resulting equation is correct:
Therefore the answer is D
Answer:
x = 10/-3
Step-by-step explanation:
-3x - 9 = 2 - 1
-3x - 9 = 1
-3x = 1 + 9
-3x = 10
x = 10 / -3
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