Answer:
Step-by-step explanation:
Express this time interval in set notation:
15 ≤ t ≤ 20
This says that the waiting time will be between 15 and 20 minutes.
Answer:
First, take x off of both sides making it: “5 -4 = 3 + 10”
Then subtract 3, making it “3(-7) = 10”
Then do 3 multiply 3 by -7, getting -21 = 10
that is how you would find out the equation is false
Answer:
Step-by-step explanation:
52 + x +58 = 180 {Straight line angles}
x + 110 = 180
x = 180 - 110
x = 70°
Answer: 
Step-by-step explanation:
For this exercise it is important to remember that, by definition, the sum of the Exterior angles of a polygon is 360 degrees.
Knowing this, you can write the following equation:

Now, you must solve for "x" in order to find its value. The steps are:
- Add the like terms:

- Subtract 108 from both sides of the equation:

- Divide both sides by 12:
