Answer:
Y= - 0.2x + 1.4
Step-by-step explanation:
See above
(4+7i)(2-i)
multiply it out
8-4i +14i -7i squared
i squared is the same as -1
8-4i+14i-7(-1)
8+7-4i+14i
15+10i
divide by common factor which is 5 in this case
3+2i
Check the picture below.
Also check your Unit Circle for the cosine of 30°, if you don't have a Unit Circle yet, this is a good time to get one, you'll need it, you can find many online.
3/5(divided)9/7
3/5x7/9
27/35
Answer:
Step-by-step explanation: