Jane volunteered for two hours and fifteen minutes last week, and five and a half hours this week. How many hours total did she volunteer during those two weeks

7 hours  45 minutes

Step-by-step explanation:

                   Hours     minutes

Last weeK      2       :   15

This week      5       :   30

Total hours=   7      :     45

too hard the other guy did it

step-by-step explanation:

b) yes

step-by-step explanation:

let the statements be named as,

statement 1: if the power has been cut, then the refrigerator does not work.

statement 2: the refrigerator does not work.

conclusion: the power has been cut

now, 'law of detachment states that if we have the statements given as,

1. if p, then q.

2. p

then, we get the true statement or conclusion as q'.

thus, on comparing, we get that,

p: if the power has been cut.

q: the refrigerator does not work.

so, the argument is true by the law of detachment.