Answer:
9
Step-by-step explanation:
f(-3)=-3×-3
= (-)(-)9
=+9
- into - covert into positive when you have square on x
hopefully, it works for you
Answer:
90%
Step-by-step explanation:
18+2=20
18/20=.9
.9*100=90
Answer:
C
Step-by-step explanation:
So first, you find the area of a rectangle, which would be 15 * 30 = 450. Next, find the area of the semicircle by doing 
(you have to divide by 2 because it's only have a circle).
The radius is half of 15, so 15 / 2 = 7.5. This would be:
The last step is to add 450 + 88.3125 = about 538.3 m^2
Pemdas
Parentheses none
Exponents none
Multiplication 18 multiplied by 2 is 36
Division 36 divided by 4 is 9
Addition none
Subtraction 9 minus 36 is -27
Your answer is -27
Answer:
x = 0
Step-by-step explanation:
Given sin(3π/2+x) + sin(3π/2+x) = -2
2sin(3π/2+x) = -2
sin(3π/2+x) = -1
clearly x = 0 on satisfies the above equation
We know that sin(3π/2+x) = - cosx
-cosx = -1
cosx = 1 Has only one solution at x=0 in x∈ [0,2π)
