Question

1. solve the proprotion k/5=5/125.

a) 1/25
b) 25
c) 5
d) 1/5


2. round the answer of 0.4x-0.2=2.5 to two decimal places.
a) -2.70
b) -6.75
c) -5.75
d) -3.25

3. what is the y-intercept of 4x-3y=-12?
a) -4
b) 3
c) -3
d) 4

Answer 1

1. solve the proportion k/5=5/125.
First reduce 5/125.
5/125 = 1/25
Now you can cross multiply.
25k = 5
k = 5/25
k = 1/5
d) 1/5

2. round the answer of 0.4x-0.2=2.5 to two decimal places.
0.4x=2.7
x = 6.75
b) -6.75

3. what is the y-intercept of 4x-3y=-12?
The y-intercept is when x = 0.
4(0) - 3y = -12
-3y = -12
y = 4
d) 4