Vanson has a bunch of boxes that are all the same. he stacked 4 boxes, measured the stack, and found that it was 3 feet high..
a. how high will stack of 20 of these boxes be?
b. the ceiling in the room where vanson is working is just a little more than 9 feet high. he wants to stack boxes from the floor to the ceiling. how many boxes will fit in one stack?

step-by-step explanation: if she dances 25 minutes longer then runs she would have dance 25 more minutes of running and 30 minutes of dancing to add up to 55

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.