Answer:
B
Step-by-step explanation:
![f(7)=\sqrt{7^2+8*7}=\sqrt{49+56}=\sqrt{105} \approx 10.247\\f(8)=\sqrt{8^2+8*8}=\sqrt{128}=8\sqrt{2} \approx 11.314\\f(8)-f(7)=11.314-10.247=1.067 \approx 1.07](https://tex.z-dn.net/?f=f%287%29%3D%5Csqrt%7B7%5E2%2B8%2A7%7D%3D%5Csqrt%7B49%2B56%7D%3D%5Csqrt%7B105%7D%20%5Capprox%2010.247%5C%5Cf%288%29%3D%5Csqrt%7B8%5E2%2B8%2A8%7D%3D%5Csqrt%7B128%7D%3D8%5Csqrt%7B2%7D%20%5Capprox%2011.314%5C%5Cf%288%29-f%287%29%3D11.314-10.247%3D1.067%20%5Capprox%201.07)
Answer:
He will have 10.
Step-by-step explanation:
this is an example of <em>the counting principle.</em>
when you add the numbers of a probability, it will give you the amount you need.
4 + 3 + 3 = 10. hope this helped! branliest plz.
Answer:
122/25
Step-by-step explanation:
488/100 percent means out of 100
find the lowest common multiple for 488 and 100 which is 4
divide numerator(488) and denominator(100) by 4
488÷4=122
100÷4=25
328 mg medicine is remaining in his system after four hours .
<u>Step-by-step explanation:</u>
Here we have , Josh ingests 800 mg of ibuprofen. His body metabolizes (uses up) 20% of the medicine per hour.We need to find How much medicine is remaining in his system after four hours .Let's find out:
According to question , Josh ingests 800 mg of ibuprofen and His body metabolizes (uses up) 20% of the medicine per hour . let amount of medicine left after 4 hours is x , So Amount of medicine left after 1 hour :
⇒ ![800-\frac{800(20)}{100} = 800-160 = 640 mg](https://tex.z-dn.net/?f=800-%5Cfrac%7B800%2820%29%7D%7B100%7D%20%3D%20800-160%20%3D%20640%20mg)
Amount of medicine left after 2 hour :
⇒ ![640-\frac{640(20)}{100} =512 mg](https://tex.z-dn.net/?f=640-%5Cfrac%7B640%2820%29%7D%7B100%7D%20%3D512%20mg)
Amount of medicine left after 3 hour :
⇒ ![512-\frac{512(20)}{100} =409.6 mg](https://tex.z-dn.net/?f=512-%5Cfrac%7B512%2820%29%7D%7B100%7D%20%3D409.6%20mg)
Amount of medicine left after 4 hour :
⇒ ![409.6-\frac{409.6(20)}{100} =328 mg](https://tex.z-dn.net/?f=409.6-%5Cfrac%7B409.6%2820%29%7D%7B100%7D%20%3D328%20mg)
Therefore , 328 mg medicine is remaining in his system after four hours .