Annie ran a mile in PE class. After resting for one hour, her heart rate was 60 beats per minute. If her heart rate decreased by 5% the first 30 mins after the mile and then 10 beats the last 30 mins before she checked again, what was her heart rate immediately after she ran the mile?

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

Y+ 2/y is it a polynomial in one variable or not? and if so, why?

Anew landowner is interested in constructing a fence around the perimeter of her property. her property is 1,080√30 feet wide and 500√20 feet long. what is the perimeter of the property? (recall that the perimeter is the sum of each side of a shape or boundary). a 1,580√40 feet b. 5,320√5 feet c. 3,160√20 feet d. 10,640√5 feet