m<1 = m<4 by vertical angles theorem
3x + 10 = 4x - 15
-1x = -25
x = 25
m<1 + m<7 = 180 if parallel alternate interior angles supplementary
3x + 10 + m<7 = 180
3(25) + 10 + m<7 = 180
75 + m<7 = 180
m<7 = 105°
Hope this helps! ;)
A little Algebra, and we're home free!
We are given R = 20 and r2 = 75. We need to find r1.
The formula is 1/R = 1/r1 + 1/r2. Plug-in:
1/20 = 1/r1 + 1/75
1/20 - 1/75 = 1/r1
0.0366 = 1/r1
r1 = 1/0.03666
r1 = 27.272
Our answer is r1 = 27 ohms.
Answer: ????
Step-by-step explanation:
CAN YOU EXPLAIN WHAT THE QUESTION IS?
IS THERE ANY BACKGROUND INFORMATION ON THIS QUESTION?
DO YOU KNOW THE ANSWER?
WHERE DID THE PROBLEM COME FROM?
WITHOUT THE INFORMATION, WE ARE NOT ABLE TO ANSWER THE QUESTION.
The answer is B my friend
