Answer:
(-5, -8)
Step-by-step explanation:
Answer:
$320
Step-by-step explanation:
400*0.8(decimal form of 80%) = 320
3619.11 or <span>2412.74 ...............</span>
<h3>
Answer:</h3>
a. -(3√13)/13
<h3>
Step-by-step explanation:</h3>
The cosine can be found from the tangent by way of the secant.
tan(θ)² +1 = sec(θ)² = 1/cos(θ)²
Then ...
cos(θ) = ±1/√(tan(θ)² +1)
The <em>cosine is negative in the second quadrant</em>, so we will choose that sign.
cos(θ) = -1/√((-2/3)² +1) = -1/√(4/9 +1) = -1/√(13/9)
cos(θ) = -3/√13 = -(3√13)/13 . . . . . matches your selection A
(-4,6)
The x value changes bc since it is a reflection y cannot change and x becomes negative