Answer:
the percent decrease is approximately 47 %
Step-by-step explanation:
Since the quantity started at 170 and then changed to 90, there was clearly a decrease in its value.
We use the following formula to calculate the percent of decrease:
![\%\,decrease = \frac{original-final}{original} \,100\\\%\,decrease = \frac{170-90}{170} \,100\\\%\,decrease = \frac{80}{170} \,100\\\%\,decrease \approx 47\,\%](https://tex.z-dn.net/?f=%5C%25%5C%2Cdecrease%20%3D%20%5Cfrac%7Boriginal-final%7D%7Boriginal%7D%20%5C%2C100%5C%5C%5C%25%5C%2Cdecrease%20%3D%20%5Cfrac%7B170-90%7D%7B170%7D%20%5C%2C100%5C%5C%5C%25%5C%2Cdecrease%20%3D%20%5Cfrac%7B80%7D%7B170%7D%20%5C%2C100%5C%5C%5C%25%5C%2Cdecrease%20%5Capprox%2047%5C%2C%5C%25)
Answer:
A) The amplitude of f is five times greater than the amplitude of g.
Step-by-step explanation:
We know that amplitude is the height from the center line to the peak (or to the trough). Or we can measure the height from highest to lowest points and divide that by 2.
From graph we can see that amplitude of function f is 5 while amplitude of function g is 1.
Clearly 5 is five times than 1.
So first choice "A) The amplitude of f is five times greater than the amplitude of g." is true.
It takes 3 pumps 16 hours to empty a tank
Meaning it takes 48 hours for one pump by its self
So if there are 4 pumps
48/4 it would take them 12 hours
They would need to work 12 hours to do it in 1 day
Answer:
−2y2−2y+7
Step-by-step explanation:
−4y−7y2+5y2+7+4y−2y
=−7y2+5y2+7+0−2y
=−2y2+7+0−2y
=−2y2−2y+7
<span>The actual number of people is either 14,400 or 15,600. </span>