During her morning run Olivia’s heart beats 330 times in 3 minutes. Enter the number of beats Olivia’s heart would have in 4 minutes at this rate.

440 beats

Step-by-step explanation:

330/3 = 110 beats per minute

110 * 4 = 440

440

Step-by-step explanation:

if you divide 330 by 3 that would be 110 in 1 minute so multiply that by 4 and you get 440

answer: no, but if it does it's a obvious pattern.

step-by-step explanation:

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15