Tell whether the lines for each pair of equations are parallel, perpendicular, or neither.
y= -2x+4
-5x+10y=5

The lines for each pair of equations are perpendicular, because the slopes for both of these have negative reciprocals.

Step-by-step explanation:

-5x+10y=5

x-2y=-1

2y=x-(-1)

2y=x+1

y=1/2x+1/2

answer: the anser is 3

step-by-step explanation:

c- 2o is equal to 9

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.