An adult’s heart beats about 2,000 times every 30 minutes. a baby’s heart beats about 2,600 times every 20 minutes.

1: find the unit rate for each number of heartbeats.

2: how many more beats does a baby’s heart beat in 60 minutes than than an adult’s heart?

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14