Answer:
r=-6
Step-by-step explanation:

Answer:
13
Step-by-step explanation:
We need to use the Pythagorean Theorem to solve this problem:
, where a and b are the legs of the right triangle and c is the hypotenuse
In this case, we already know b (b = 84) and c (c = 85), so we need to solve for a:

Thus, a = y = 13.
Answer:
14 and simplify to 4
Step-by-step explanation:
Add 1010 to both sides.
x=4+10
x=4+10
2 Simplify 4+104+10 to 1414.
x=14
x=14
x−10=4
1 Let x=14x=14.
14-10=4
14−10=4
2 Simplify 14-1014−10 to 44.
4=4
4=4
Answer:
<h3>Option 2 </h3>
angle 2 = 7x + 1 ( vertically opposite angles)
7x + 1 + 18x + 4 = 180° ( forming linear pair).
7x + 18x + 4 +1 = 180°
25x + 5 = 180°
25x = 180 - 5
25x = 175
x = 7°
angle 2 = 7(7)+ 1
= 50°
There has to be a negative and a positive for each