An adult's heart beats 2,100 times every 30 minutes. a baby's heart beats 2,600 times every 20 minutes. how many more beats does a baby's heart beat in 60 minutes than an adult's heart?

A baby's heart beats 3600 times more in an hour than an adult's heart.

Step-by-step explanation:

If an adult's heart beats 2,100 times every 30 minutes, it beats 4,200 times every 60 minutes.

If a baby's heart beats 2,600 times every 20 minutes, it beats 7,800 times every hour.

Subtract the adult's heart beats from the baby's heart beats (7,800-4,200) and you'll receive the number of more beats a baby's heart does (7,800-4,200=3,600).

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation: