PLEASE HELP!!!!!!
2 answers:
Answer:
Option 1 and 3 - 1.3 seconds and 3.2 seconds
Step-by-step explanation:
Given : The equation that models the height above or below equilibrium in inches, h, of a spring over time in seconds, t, is .
To find : At which times will the spring be at a height of 20 in. above equilibrium?
Solution :
We have given,
The equation that models the height above or below equilibrium in inches
We have to find at h=20 inches the time of spring.
We show it graphically,
Plot the graph of the model
Then, Substitute h=20
The points of their intersections are the solution of the model.
The intersection points are (1.831,20), (3.169,20) and many more.
From the given options,
The time are 1.3 seconds and 3.2 seconds.
Therefore, Option 1 and 3 are correct.
Refer the attached figure below.
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Answer:
1 - Option C - 10,000
2 - 3x+5 will be 12 more than 3x-7.
Step-by-step explanation:
1) To find : With what number must 3.475817 be multiplied in order to obtain the number 34,758.17?
Solution :
The number 3.475817 is multiplied by number to obtain 34,758.17.
As we see that, the decimal is moved four places to the right.
Which means the number is multiplied by 10000.
i.e.
Therefore, option C is correct.
2) To find : How much greater is the value of 3x+5 than the value of 3x−7?
Solution ;
Assuming that x is the same value in each equation,
In order to determine the difference between the two values,
We ignore the 3x part as it is the same on both of the equations.
So, from 5 to -7 i.e. 7+5=12.
Therefore, 3x+5 will be 12 more than 3x-7.
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 = 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.