Answer:
y =
- 8
y = -
+ 3
y =
- 8
y = 
Step-by-step explanation:
To know the pairs that are perpendicular lines, we need to understand what makes a line perpendicular to another.
Perpendicular lines generally have slopes;
m and
So, any of the pairs with a negative inverse value of slope will be perpendicular.
y =
- 8 slope = 
y =
slope = 
We see they are negative inverses
y =
- 8 slope = 
y =
slope = 
These are also negative inverses.
Answer:
-3
Step-by-step explanation:
<em>r</em> = 12
<em>s</em> = -4
<em>t</em> = -6
<u>Equation</u>
<em>rs</em> ÷ 16
12(-4) ÷ 16
-48 ÷ 16
-3
Answer:
A
Step-by-step explanation:
π=3.14159...
Full circle are 25π cm² = 25*3.14=78.5 cm²
Half 78.5 cm²/2 = 39.25 cm²
Answer:
b = 60
Step-by-step explanation:
The sum of the angles of a triangle are 180
80+40+b = 180
Combine like terms
120+b =180
Subtract 120 from each side
b = 180-120
b = 60