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>
Answer:
Step-by-step explanation:
Y is equal to 1/5 x + 4 so what you need to do as you need a coordinator or 1/5 is and then you need to move to the right or the left the four
Answer:
x = 3
Step-by-step explanation:
Step 1: Define
f(x) = -3x + 5
f(x) = -4
Step 2: Substitute and Evaluate
-4 = -3x + 5
-9 = -3x
x = 3
B: -8
8 times 1 = 8, and since there is a negative in front of the 1 when you are multiplying, it should be -8/
2.5 still if you make it a fraction it would be 2 and 1 1/2 so you can't simplify that any more
