Answer:
+
i
Step-by-step explanation:
Using the exact value
cos60° =
and sin60° =
, then
3(cos60° + isin60°)
= 3(
+
i) ← distribute by 3
=
+
i ← in the form a + bi
Answer:
C
Step-by-step explanation:
i belive it is C because if you look at it your just multiplying by 4 hope this helps!!! :D
60 min in one hour so 60+60+30=150.
150 divided 50 mins = 3 days (50+50+50=150)
Aliaa got a mark of 60 in her first 4 tests, so her total mark is 60 x 4 = 240. On her fifth test, she got a mark of 80.
So her average is:
(240+80)/5 = 320/5 = 64
Her avg is 64 (c).
Answer:
-18
Step-by-step explanation:
-12 + (-2)(3)
= (-12)+((-2)x(3))
= (-12)+(-6)
= (-12)-(6)
= -18