Answer:
This time I was told the answer is 14
Answer:

Step-by-step explanation:
Given


Required
Write the equivalent cosine function
The general formula is:

Where


Substitute
for amplitude in 


Substitute 3 for period in 

<em>Multiply both sides by b</em>

<em>Divide through by 3</em>

Hence;
becomes

B. 55,000,000 from 54,860,000
Answer:
160°
Step-by-step explanation:
The angle sum theorem tells you the sum of angles in a triangle is 180°. The sum of angles in the given triangle is ...
x + (x +4) + 20x = 180
22x +4 = 180 . . . . . . . . . . collect terms
22x = 176 . . . . . . . . . . subtract 4
x = 8 . . . . . . . . . . . divide by 22
20x = 160 . . . . find the largest angle
The measure of the largest angle is 160°.