D...? I think you answered your own questions there.
S is 30 degrees :) triangles are 180 degrees and you already know the measure of two, so if you add 85+65 you get 150. the. you subtract 180-150 and you get 30!
Answer:
63+22i
Step-by-step explanation:
(8-3i) (6+5i)
first: 8*6 = 48
outer: 8*5i = 40i
inner: -3i*6 = -18i
Last: -15i^2 = -15(-1) = 15
Add them together = 48+40i-18i+15
= 63+22i
Answer:
x - 1 and 5x - 7
Step-by-step explanation:
f(x) + g(x)
= 3x - 4 - 2x + 3 ← collect like terms
= x - 1
f(x) - g(x)
= 3x - 4 - (- 2x + 3) ← distribute parenthesis by - 1
= 3x - 4 + 2x - 3 ← collect like terms
= 5x - 7