Answer:
0019273637282.3.5 y .u uowiwotjuirooiqjdjcnncnxndhsiwj nxjsisisiiwhdvdhsjwndbxuakwnsbsuwkwnnshwjwnhidjwjbsusjwvshiw bdhxuiwjsjsbduisishshwqwjbsuijbshiwojsbhdxjsisisiusjjjsjdhdbbdbdbdjejwiwi wuejdjdjjendbdbdbdbdjejeieiejejejjsjsjsjnendjjsksiskoaoakaooiaoajsjjsjwjjwjsisnw vhxjwkaowjnendushwjsisisikwkwkwksbbdhd sjjsisjwjejsjjsisjsnhduisiwjebdvgxyiabwnsnkzisjsvehsguwiwjehhdjsusiwikwkwksjs
The equation represents height as a function of time.
The bullet was in the air for 75 seconds.
The equation is given as:
![h(t) = -16t^2 + 1200t](https://tex.z-dn.net/?f=h%28t%29%20%3D%20-16t%5E2%20%20%2B%201200t)
The time spent in the air is the time it takes the bullet to land on the ground.
When the bullet is on the ground, the height is:
![h(t) = 0](https://tex.z-dn.net/?f=h%28t%29%20%3D%200)
So, we have:
![h(t) = -16t^2 + 1200t](https://tex.z-dn.net/?f=h%28t%29%20%3D%20-16t%5E2%20%20%2B%201200t)
![-16t^2 + 1200t = 0](https://tex.z-dn.net/?f=-16t%5E2%20%2B%201200t%20%3D%200)
Factor out t
![t(-16t + 1200) = 0](https://tex.z-dn.net/?f=t%28-16t%20%2B%201200%29%20%3D%200)
Split
or ![-16t + 1200 = 0](https://tex.z-dn.net/?f=-16t%20%2B%201200%20%3D%200)
represents when the shot is fired.
So, we solve for t in ![-16t + 1200 = 0](https://tex.z-dn.net/?f=-16t%20%2B%201200%20%3D%200)
Collect like terms
![16t = 1200](https://tex.z-dn.net/?f=16t%20%3D%201200)
Divide both sides by 16
![t = 75](https://tex.z-dn.net/?f=t%20%3D%2075)
Hence, the bullet was in the air for 75 seconds
Read more about height and time at:
brainly.com/question/2261757
Answer and explanation:
1. It is commonly referred to as the arithmetic average: the mean measure of central tendency is also referred to as the arithmetic mean or arithmetic average or just average.
It is algebraically defined (that is, there is an equation you can use to calculate its value): the mean can be represented by the algebraic equation
a1+a2+a3...ai/n
2. There can be more than one median where there are an even number of data points and not odd number, in which the two middle number are divided by 2
It can be found when there are undetermined scores: median can be found with undetermined scores
3. It corresponds to an actual score in the data: the mode is an actual value in the data that appears more frequently than other values
There can be more than one: there can be more than one mode(bimodal,trimodal,multimodal) where 2 or more values appear the same number of times
Answer:
21.98
Step-by-step explanation:
C=2πr C=2d are the formulas of circumference so that would mean the diameter of the circle is 7 since 2 times the radius is the diameter. We then multiply the diameter 7 by PI to get 21.98