Answer:
The water level is rising because it is filling 10 more liters than it is draining
16.7 hours
Step-by-step explanation:
<span>A proof should always begin with stating the given information.
True</span>
Answer: f(-4) = 17
Step-by-step explanation: Substitute (-4) for x.
- f(-4) = -5(-4) - 3
- f(-4) = 20 - 3
- f(-4) = 17
Answer:

Step-by-step explanation:
To solve this problem you must know the formula of subtraction of angles for the function cosx.
The formula is:

We can write 30° as: 45° - 15°
Then:

Using the formula for subtraction of angles we have:

Notice that we have achieved the expression shown in the statement
Finally:
