Question

Mary has been 5 1/2 hours to finish her community service program in a community health clinic last week she was able to spend three 3/4 hours which equation can be used to determine number hours eight that married still needs to spend to complete her service program

Answer 1

The equation that can be used to determine the number of hours Mary still needs to spend to complete her service program is:

Total hours needed - hours already spent = hours Mary still needs to spend

Let's calculate the total hours needed:

Mary needs to spend 5 1/2 hours in total.
To convert 5 1/2 into a fraction, we have 5 + 1/2 = 5/1 + 1/2 = 10/2 + 1/2 = 11/2 hours.

Now, we can use the equation:

11/2 - 3 3/4 = ? (hours Mary still needs to spend)

To solve this equation, let's find a common denominator:

11/2 - (3 * 2/2 + 3/4)
11/2 - (6/2 + 3/4)
11/2 - (12/4 + 3/4)
11/2 - 15/4

Now, let's subtract the fractions:

11/2 - 15/4
(11 * 2)/(2 * 2) - 15/4
22/4 - 15/4
(22 - 15)/4
7/4

Therefore, the equation can be used to determine the number of hours Mary still needs to spend to complete her service program is:

7/4 hours.