Answer:
C = 3n+8
Step-by-step explanation:
you multiply $3 times the number of students and then add $8 for the advisor to get the total cost.
A.yx
due to it having the largest angle.
Since there is an expression in the square root, it must be non-negative. So:
Then, the interval is:
![\boxed{x\in~]-\infty,4]}](https://tex.z-dn.net/?f=%20%5Cboxed%7Bx%5Cin~%5D-%5Cinfty%2C4%5D%7D)
Answer:
<em>π/2 and π/3</em>
Step-by-step explanation:
Given the equation 2cos²x - cosx = 0, to find the solution to the equation, we will follow the following step.
let P = cosx
The equation becomes 2P²-P = 0
P(2P-1) = 0
P = 0 and 2P-1 = 0
P= 0 and P = 1/2
Since P = cosx
cosx = 0 and cos(x) = 1/2
If cos(x) = 0
x = cos⁻¹0
x = 90⁰
x = π/2
If cos(x) = 1/2
x = cos⁻¹1/2
x = 60⁰
x = π/3
<em>Hence the solutions to the equation are π/2 and π/3.</em>
x =65/2 = 32.5
y = 180 - 2(65)
y = 180 - 130
y = 50
hope it helps
