Answer:
r= -1.8
Step-by-step explanation:
Distribute
-3-18r=14-7
Combine like terms
-3-18r=7
add 3 to both sides
-18r=10
divide by -18
r=-1.8
Since angles A and C are equivalent, then angles B and D must also be equivalent. So if
angle B = angle D then...
7x + 15 = 8x
Now we just solve for x
7x + 15 = 8x
15 = 8x - 7x
15 = x
We Can check to see if it is correct by substituting 15 in for x in the equation..
7x + 15 = 8x
7 (15)+15 = 8 (15)
105 +15 = 120
120 = 120
It checks! angles B and D = 120 degrees
I wrote some notes please read and if you not sure contact me
Answer: A
Step-by-step explanation:
I just took the USATESTPREP quiz and that is the answer.