Answer:
1.732050808
Step-by-step explanation:
Step-by-step explanation:
(x + 20)º and (4x - 5)º are supplementary angles, meaning the sum of their angles = 180º.
(x + 20) + (4x - 5) = 180
5x + 20 - 5 = 180
5x + 15 = 180
5x = 165
165/5 = 33
Answer: x = 33
Bc and ef are congruent so that means
4x-7 =2x+3 subtract 2x from both sides
-2x -2x
_________
2x-7 = 3 add seven to both sides
+7 +7
________
2x = 10 divide both sides by 2
__ ___
2 2
x=5 replace x with 5
4(5) -7= 13
2(5) +3=13
both bc and ef equal 13
Answer:
-1
Step-by-step explanation:
I solved it the way one-variable equations are solved.