Answer:
300L per hour
Step-by-step explanation:
The rate of change of volume of blood pumped by the teenager's heart expresses the volume of blood pumped with respect to hour.
Rate of change of volume of blood = 
= 
= 300L/hour
The rate of change of volume of blood by the teenager's heart is 300 litres per hour. This implies that his/ her heart pumps 300 litres of blood every hour.
Answer:eirther C or D not sure
Step-by-step explanation:
Answer: a) about 450
Step-by-step explanation:
50 multiplied by 9 is 450 and its asking for an approximate so it would be anything near 450
Answer:
14 42 in thirds is 14 so if he had to pay a third he paid 14 bucks
Step-by-step explanation:
42/3=14
12/15÷1/5
when dividing fractions, all you have to do is multiply the first number by the second number's reciprocal
(reciprocal is denominator over numerator)
12/15÷1/5
12/15×5/1
remember when multiplying fractions it's the the two numerators multiplied together over the two denominators multiplied
12/15×5/1
60/15
4
The answer is 4
