Option D:
Solution:
Given data:
Let the unknown degree be x.
To find the degree x:
Cancel the common factor 7 in the numerator and denominator.
Using trigonometry basic formula,
we know that 
.
So, x = 60°.
The unknown degree measure is 60°.
Hence option D is the correct answer.
To solve this, you do:
110 divided by 5 1/2.
If you want your answer in fraction form, you do:
110/1 ÷ 11/2 (the improper fraction form)
To multiply, flip the second fraction to change from dividing to mutiplying:
110/1 × 2/11
Multiply across
110 × 2 = 220 and 1 × 11 = 11
220/11
Simplify:
220 ÷ 11 = 20
Tom babysat for 20 hours.
1.) set up the problem as if there were no decimals
4.) Multiply
2.) count the numbers behind the decimals in the problem
3.) count over that number of spaces from the right in your to place the decimal
