19(3) + 17(2) = 91 and 91 is not equal to 55
19(3) +17(-2) = 23 and 23 is not equal to 55
19(2) + 17(1) = 55 and also 17(2) + 19(1) = 53
So the answer is C.
Hope this helped :)
Answer:
See below ~
Step-by-step explanation:
<u>Q3</u>
- r = 8 / sin 45°
- r = 8 / (1/√2)
- <u>r = 8√2</u>
- t = 8 / tan 45°
- t = 8 / 1
- <u>t = 8</u>
<u></u>
<u>Q4</u>
- f = 9√3 / sin 60°
- f = 9√3 / (√3/2)
- <u>f = 18</u>
- o = 9√3 / tan 60°
- o = 9√3 / √3
- <u>o = 9</u>
(c^3)^2 * c^2 = c^8 so
c^8 = A^2 B
c^3 * (c^2)^(5/2) = c^8 so
c^8 = A B^(5/2)
Answer:
21
Step-by-step explanation:
3x+6=5x-4 because of alternate interior angles of a parallel line
10=2x
x=5
15+6=21
7+x
expressions are things without equal signs.