I think you got confused with the 50 and 90.
Read my NOTE there it will surely help you answering other questions like this
Answer:
I think it is d
Step-by-step explanation:
THe answer is -7+1i.
I just did the assignment as well, hope this helps!
S = πr² + πrl
S = 3.14(5)² + 3.14(5)(12)
S = 3.14(25) + 3.14(60)
S = 78.5 + 188.4
S = 266.9 cm²
First of all, you have to manipulate the equation into the standard

form. You can simplify the 1's on both sides and you have

This means that your coefficients are

And since the solving formula is

Plugging your values yields
