Answer:
3/5
Step-by-step explanation:
Using SOHCAHTOA, we know that cos Ф = 
So, we know that cos Ф = 
or, using the hint, 3/5
1. Given
2. If parallel lines are cut by a transversal, then corresponding angles are congruent.
3. Definition of congruency.
4. if parallel lines are cut by a transversal, then corresponding angles are congruent.
5. Linear pairs are supplementary.
6. Definition of supplementary.
7. Substitution
8. Definition of supplementary.
Sorry if these are wrong. I haven't done geometry in so long, but most of these are right. You might want to check number 4 and 2.
Steps to finding the inverse:
1. Replace f(x) with y.
2. Swap x and y.
3. Solve the equation for y.
f(x) = 2x - 10
1. y = 2x - 10
2. x = 2y - 10
3. Add 10 to both sides
x + 10 = 2y
Divide both sides by 2
(x + 10)/2 = y
y = (x + 10)/2
f^-1(x) = (x + 10)/2
A moving sidewalk at an airport moves at a rate of 1.7 ft/sec. Walking on the moving sidewalk, a person travels 104 ft forward in the time it takes to travel 52 ft in the opposite direction.
