What's the answer to that equation above

At a resting pulse rate of 75 beats per minute, the human heart typically pumps about 73 mL of blood per beat. Blood has a densi

Kaylis [27]

Answer:

There is approximately 5.475 liters of blood in the body.

Step-by-step explanation:

At a resting pulse rate of 75 beats per minute, the human heart typically pumps about 73 ml of blood per beat.

73 ml in liters = $73\times0.001=0.073$ liters

Now, 75 beats/min x 0.073 liters/beat = 5.475 liters/min

And 5.475 liters/min x 1 min/body = 5.475 liters/body

Hence, there is approximately 5.475 liters of blood in the body.

7 0

3 years ago

How many times do you need to multiply by ten to get from 19.797 to 1979.7

borishaifa [10]

You need to multiply 19.797 by 10 two times to reach 1979.7

5 0

3 years ago

Read 2 more answers

Jim went by bus to visit his uncle. He left at 10 A.M. and arrived at 4 P.M. The bus traveled 270 mi. What was its average speed

Feliz [49]

Answer:

Average speed, S = 45 mph

Step-by-step explanation:

Given the following data;

Take-off time = 10 AM

Arrival time = 4 PM

Distance = 270 miles

To find the average speed of the bus;

First of all, we would determine the total time.

10 AM to 4 PM = 6 hours

Total time = 6 hours

Speed can be defined as distance covered per unit time. Speed is a scalar quantity and as such it has magnitude but no direction.

Mathematically, speed is given by the formula;

$Speed = \frac{distance}{time}$

Substituting into the formula, we have;

$Speed = \frac{270}{6}$

Average speed, S = 45 mph

Therefore, the average speed of the bus is 45 miles per hour.

4 0

2 years ago

Plaese help !!! 5/7m=15

Darina [25.2K]

$\dfrac{5}{7}m = 15$

Multiply both sides by 7/5.

$\dfrac{7}{5} \times \dfrac{5}{7}m = \dfrac{7}{5} \times 15$

$\dfrac{35}{35} m = \dfrac{7 \times 15}{5}$

$\dfrac{35}{35} m = \dfrac{7 \times 3 \times 5}{5}$

$m = \dfrac{7 \times 3}{1}$

$m = 21$

5 0

3 years ago

Read 2 more answers

What is the midline of this function? y=

Sergeeva-Olga [200]

Answers:

Midline: y = 0
Amplitude = 1.5
Function: g(x) = 1.5sin(0.5x + pi/4)

There are infinitely many possible ways to answer the third part.

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Explanation:

The midline is the horizontal line that goes through the center of the sine curve. Visually we can see that is y = 0. Another way we can see this is to note how y = 0 is the midpoint of y = 1.5 and y = -1.5, which are the max and min respectively.

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The amplitude is the vertical distance from y = 0 to y = 1.5, and it's also the vertical distance from y = 0 to y = -1.5; in short, it's the vertical distance from center to either the peak or valley.

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The general format of a sine curve is

y = A*sin(B(x-C)) + D

where,

|A| = amplitude
B = variable tied with the period T, specifically B = 2pi/T
C = handles the left and right phase shift
D = handles the vertical shifting, and y = D is the midline.

In this case, we found so far that

|A| = 1.5 which could lead to A = 1.5
B = 2pi/(4pi) = 0.5 since T = 4pi is the period
D = 0

The only thing we're missing is the value of C, which is the phase shift.

Note the point (pi/2, 1.5) is one of the max points on this curve. Also, recall that sin(x) maxes out at 1 when x = pi/2

This must mean that the stuff inside the sine, the B(x-C) portion, must be equal to pi/2 in order to lead sin(B(x-C)) = 1.

So,

B(x-C) = pi/2

0.5(pi/2-C) = pi/2

pi/4 - C/2 = pi/2

4*( pi/4 - C/2 ) = 4*(pi/2)

pi - 2C = 2pi

-2C = 2pi - pi

-2C = pi

C = pi/(-2)

C = -pi/2

This allows us to update the function to get g(x) = 1.5*sin(0.5(x+pi/2)) which is the same as g(x) = 1.5sin(0.5x + pi/4)

This is one possible answer because we could have infinitely many possible values for C, due to sin(x) = 1 having infinitely many solutions.

Also, you could use cosine instead of sine. Cosine is just a phase shifted version and of sine, and vice versa.

7 0

2 years ago