Answer:
He traveled for 2.5 hrs at 54 mi/hr
He traveled for 3 hrs at 61 mi/hr
------------------------------
check:
(1) +d+=+54t+
(1) +d+=+54%2A2.5+
(1) +d+=+135+ mi
Answer:
The can do so in 24 different orders.
Step-by-step explanation:
The number of arranjments of n elements, that is, in how many orders can n elements be organied is:

In this problem, we have:
4 cities, which means that n = 4. So

The can do so in 24 different orders.
Answer:
I prefer to express solutions to inequalities using interval notation. Both formats are are important but I think interval notation is easier to understand and represents better the solutions.
For example, if you have the following inequation:
x-2> 1
x>3
Therefore, the solution could be written either x>3 OR (3, +inf). But what happens if the solution to the system of equation is x>3 or x<-3? The solution can be easily written as: (-inf, -3) U (3, inf) instead of 'x>3 or x<-3' which can be confusing.
Answer:
D. 110°
Step-by-step explanation:
we know that
When two lines are crossed by another line (which is called the Transversal), the angles in matching corners are called <u><em>corresponding angles</em></u>.
When the two lines are parallel Corresponding Angles are congruent
In this problem
The transversal line is t
The two lines that are crossed by the transversal are line l and line m
Lines l and m are parallel
therefore
----> by corresponding angles