Ablue whale's heart beats only 45 times in 5 minutes. write an equation comparing the number of beats to the number of minutes. at that rate, how many times would the blue whale's heart beat in 20 minutes?

Divide 45 with 5 to find out the amount of times the whale's heart beat per minute

45/5 = 9

9 times per minute

Now multiply 9 with 20

20 x 9 = 180

A whale's heart beats 180 times in 20 minutes

hope this helps

the least common denominatore of 7 and 2 is 9

step-by-step explanation:

7+2=9

1. x> -5

2. x< 8

step-by-step explanation:

1. 2x> -10

divide by 2 from both sides of equation.

2x/2> -10/2

simplify, to find the answer.

-10/2=-5

x> -5 is the correct answer.

2. 3x< 24

divide by 3 from both sides of equation.

3x/3< 24/3

simplify, to find the answer.

24/3=8

x< 8 is the correct answer.

i hope this you, and have a wonderful day!