Answer:
-90=
(
-18)
-90=
-18


Step-by-step explanation:
you need to use quadratic formula and you will find square root a negative ( -9 ), which is an imaginary no.
square root (-9) = 3i
60(pi/180)=pi/3
.5(12^2)(pi/3)
72(pi/3)
24pi
Answer:
b
Step-by-step explanation:
1/4 + 3/10
find the common denominator which is 20
multiply by 5 for 1/4
1(5)/4(5)=5/20
multiply by 2 for 3/10
3(2)/10(2)=6/20
5/20+6/20=11/20
answer:
11/20