Answer:
8
Step-by-step explanation:
Parallel have same slope
Perpendicular have opposite reciprocal slopes. Ex. 2/3 is slope of one line so the perpendicular line would have slope of -3/2.
Find slopes of these lines.
-4x-5y=-4
-4x+4 =5y
Divide by 5
Y= -4x/5 +4/5
Second line: 10x-8y=-1
10x+1=8y
Divide by 8
10x/8 +1/8 =y
Y= 5x/4 +1/8
So if you look at slope of line 1= -4/5 and line 2 it’s 5/4 so these both are perpendicular.
The second equation, its setup is correct
Answer:
$5.30
Step-by-step explanation:
$16.50 = (3)p
[p = pizza]
To solve you have to separate the p by removing the (x3)
1) Divide both sides of the equation by 3
[ 16.50 / 3 = p}
2) Divide 16.50 by 3
[5.30]
3) 5.30 = p