Three boxes are stacked one on top of the other. one box is 6 feet 5 inches tall, one is 4 feet 6 inches tall, and one is 5 feet 7 inches tall. how high is the stack? write your answer in feet and inches. use a number less than 12 for inches.

Start with adding the feet: 6+4+5=15

then add the inches: 5+6+7=18

18 inches= 1 foot and 6 inches

So its 16 feet and 6 inches

sin3a=12/15

step-by-step explanation:

since one side was multiplied by 3 the other side must also be multiplied by 3.

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.