Answer:
see the explanation
Step-by-step explanation:
we know that
The circumference of a circle is equal to
![C=\pi D](https://tex.z-dn.net/?f=C%3D%5Cpi%20D)
where
D is the diameter
In this problem we have
![C=2.88\ in](https://tex.z-dn.net/?f=C%3D2.88%5C%20in)
![\pi=3](https://tex.z-dn.net/?f=%5Cpi%3D3)
substitute and solve for D
![2.88=(3)D](https://tex.z-dn.net/?f=2.88%3D%283%29D)
![D=2.88/3](https://tex.z-dn.net/?f=D%3D2.88%2F3)
![D=0.96\ in](https://tex.z-dn.net/?f=D%3D0.96%5C%20in)
we know that
The length of the row of quarters is equal to multiply the diameter of the quarter by the number of quarters in the row
so
For 4 quarters in the row, the length is equal to --> ![0.96(3)=3.84\ in](https://tex.z-dn.net/?f=0.96%283%29%3D3.84%5C%20in)
For 6 quarters in the row, the length is equal to --> ![0.96(6)=5.76\ in](https://tex.z-dn.net/?f=0.96%286%29%3D5.76%5C%20in)
For 12 quarters in the row, the length is equal to -> ![0.96(12)=11.52\ in](https://tex.z-dn.net/?f=0.96%2812%29%3D11.52%5C%20in)
Answer:
2.
a. 2 books
n/3 books
b. 9 books
3.
a. 8 tomatoes
2/5x
Step-by-step explanation:
6/3 = 2
n/3
27/3 =9
2/5 *20 = 40/5 =8
2/5*x 2/5x
plz mark branliest if this helps
Answer:
h = 110.24 m
Step-by-step explanation:
It is given that,
A rock is thrown up from the ground at a velocity of 84 feet per second. The formula
gives the rock's height in feet after t second.
We need to find the maximum height of the rock. For maximum height put ![\dfrac{dh}{dt}=0](https://tex.z-dn.net/?f=%5Cdfrac%7Bdh%7D%7Bdt%7D%3D0)
So,
![\dfrac{d( -16t^2 + 84t)}{dt}=0\\\\-32t+84=0\\\\t=\dfrac{84}{32}\\\\t=2.62\ s](https://tex.z-dn.net/?f=%5Cdfrac%7Bd%28%20-16t%5E2%20%2B%2084t%29%7D%7Bdt%7D%3D0%5C%5C%5C%5C-32t%2B84%3D0%5C%5C%5C%5Ct%3D%5Cdfrac%7B84%7D%7B32%7D%5C%5C%5C%5Ct%3D2.62%5C%20s)
Put t = 2.62 s in the equation of height. So,
![h = -16(2.62)^2 + 84(2.62)\\\\h=110.24\ m](https://tex.z-dn.net/?f=h%20%3D%20-16%282.62%29%5E2%20%2B%2084%282.62%29%5C%5C%5C%5Ch%3D110.24%5C%20m)
So, the maximum height of the rock is 110.24 m.
14 my teacher just told me the answer
Answer:
The answer is A :)) hehe.