Answer:
Step-by-step explanation:
hi
Answer:74.55 beat per minute
Step-by-step explanation:
Given
Heart beat is 52 beat per minute
i.e.
beat per sec
If heart rate is increases 1.25 % each sec
suppose B is the heart beat at first second therefore heat beat at 2 nd second
![B_2=B+1.25 \% B](https://tex.z-dn.net/?f=B_2%3DB%2B1.25%20%5C%25%20B)
![B_2=B(1+1.25 \% )](https://tex.z-dn.net/?f=B_2%3DB%281%2B1.25%20%5C%25%20%29)
For 3 rd sec
![B_3=B(1+1.25\%)+1.25\%B(1+1.25\%)](https://tex.z-dn.net/?f=B_3%3DB%281%2B1.25%5C%25%29%2B1.25%5C%25B%281%2B1.25%5C%25%29)
![B_3=B(1+1.25\%)^2](https://tex.z-dn.net/?f=B_3%3DB%281%2B1.25%5C%25%29%5E2)
similarly for 3 sec
![B_{30}=B(1+1.25\%)^{29}](https://tex.z-dn.net/?f=B_%7B30%7D%3DB%281%2B1.25%5C%25%29%5E%7B29%7D)
![B_{30}=1.433B](https://tex.z-dn.net/?f=B_%7B30%7D%3D1.433B)
![B_{30}=1.242\ \text{beat per second }](https://tex.z-dn.net/?f=B_%7B30%7D%3D1.242%5C%20%5Ctext%7Bbeat%20per%20second%20%7D)
![B_{30}=74.55\ \text{beat per minute}](https://tex.z-dn.net/?f=B_%7B30%7D%3D74.55%5C%20%5Ctext%7Bbeat%20per%20minute%7D)
<span>The answer is D. Distributive
It is a distributive problem because you are are distributing the numbers within the parenthesis.
Hope this helped. Have a great day!</span>
Step-by-step explanation:
3. The length of the rectangle is 3x and width is x+5
Now,
Area of rectangle=l×b
=3x(x+5)
=3x^2+15x(option d.)
4. 2/3x-4=20
2x/3=20+4
2x/3=24
2x=24×3
2x=72
x=72/2
x=36(option d.)
Answer:
Hours Worked
Step-by-step explanation: