Answer:
x=13
Step-by-step explanation:
Side Splitter Theorem states that If a line is parallel to one side of a triangle and intersects the other two sides, it divides both sides proportionally.
21/14 =1.5
6x1.5 = 9
x-4=9
x=13
Answer:
x+y=5
Step-by-step explanation:
Answer:
x = -27
Step-by-step explanation:

Answer: k= 10
Explanation:
? + 115= 180
180-115=65
the unknown interior angle is 65 degrees since they’re supplementary angles
every triangle has an interior angle total of 180 degrees. since we have the 65 degree angle known, the others can be solved.
180-65= 115
(4k+5)+(6k+10)= 115
10k+15= 115
-15 -15
10k= 100
k=10