Answer:

Step-by-step explanation:
, substitute
to x
=
or 3.75
=
= 
Answer: Legs
Plan: Place the right triangle in the coordinate plane with the vertex of the (a) __________ at the origin and the (b) __________ along each axis.
Question says place the right angle in the coordinate plane.
It is a right angle triangle. If we place a right angle vertex at the origin then other two sides will be along x axis and y axis.
Place the right triangle in the coordinate plane with the vertex of the right angle at the origin and the legs along each axis.
Answer:
C. (4,2)
Step-by-step explanation:
The point where the lines intersect is (4, 2)
You’re supposed to +7 each time
Answer:
r=20
Step-by-step explanation:
since the angle and sum of a straight line is equal to 180, you structure an equation:
180=105+(4r-5)
solve for r
180=100+4r
80=4r
20=r
check answer
4r-5 4(20)-5
80-5
75+105=180