Answer:
B) 24
Step-by-step explanation:
A right triangle is 90°
90-42=48
48/2=24
-5/4 , by using m= (y2-y1)/ (x2-x1)
The answer is C, or 28.
You can plug the values into a regression calculator to find the equation. When you do this, you will get the equation y=18.001+0.3ln(x). When you substitue 19 in for y, you get that x is about 28.
Answer:

Step-by-step explanation:
use the form
to find the values of a, b, and c.

consider the vertex form of a parabola

substitute the values of a and b into the formula 

simplify the right side.
find the value of e using the formula 

Answer:
C, assuming you left off the y on the 30
Step-by-step explanation:
30(.5x-2)+40(.75y-4)
Distribute
15x-60+30y-160
Simplify
15x+30y-220