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3 years ago

A teenager’s heart pumps an average of 7200 L of blood every 24 hours. What is the rate of change of volume of blood?

Mathematics

1 answer:

love history [14]3 years ago

7 0

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 = $\frac{volume of blood}{time}$

= $\frac{7200L}{24}$

= 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.

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Solve the polynomial inequality (x+6)+(x+4)+(x+2)<0

Yanka [14]

You solve it just like you would with an equation.

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2 years ago

A machine can scan 12 pages in 3/5 minute. How many pages can be scanned in 1 minute?

Sedbober [7]

I believe that the answer is 20. I am not entirely sure though.

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3 years ago

Read 2 more answers

A rectangular poster is 3 times as long as it is wide. A rectangular banner is 5 times a long as it is wide. Both the banner and

deff fn [24]

Answer:

The answer to your question is

a) Poster width = 3 in

lenght = 9 in

b) banner

width = 2 in

lenght = 10 in

Step-by-step explanation:

a) For the poster

width = x

lenght = 3x

Perimeter of a rectangle = 2base + 2 height

= 2(x) + 2(3x) = 24

2x + 6x = 24

8x = 24

x = 24/8

x = 3

width = 3 in

lenght = 3(3) = 9 in

b) For the banner

width = y

lenght = 5y

Perimeter of a banner = 2 base + 2 height

2 (y) + 2(5y) = 24

2y + 10y = 24

12y = 24

y = 24/12

y = 2

width = 2 in

lenght = 5(2) = 10 in

7 0

2 years ago

The number of bikes sold each year, in thousands, in a city since 2004 is shown by the graph below, where x represents the numbe

fgiga [73]

Answer: Your answer will be A

Hope this helps

Step-by-step explanation:

4 0

3 years ago

What are the coordinates of the point on the directed line segment from (5,5) to

iogann1982 [59]

Answer:

$(x,y) = (6,2)$

Step-by-step explanation:

Given

$(x_1,y_1) = (5,5)$

$(x_2,y_2) = (8,-4)$

$m:n = 1:2$

Required

Determine the coordinate of the partition

This is calculated using:

$(x,y) = (\frac{mx_2 + nx_1}{m + n},\frac{my_2 + ny_1}{m + n})$

Substitute values for m,n,x's and y's

$(x,y) = (\frac{1 * 8 + 2 * 5}{1+2},\frac{1*-4 + 2*5}{1 + 2})$

$(x,y) = (\frac{18}{3},\frac{6}{3})$

$(x,y) = (6,2)$

6 0

2 years ago