A / [ pi r^2 ]<span> = θ / [ 2pi ] </span> [ multiply both sides by pi r^2 ]
A = [ θ / 2 ] r^2 = <span> (1/2)r^2 θ</span>
Hmmm let hmm come to think..5£ is a bit too much for some junk glass anyway =) hehee, anyhow. so 5cents then
let us nevermind the price for now, and see how many grams are needed for the 6hours
so 1 bottle (500 grams), gives Adam 7.5 minutes of oven time
how many grams will it be for 6hrs or 6 * 60 = 360 minutes?
![\bf \begin{array}{ccllll} grams&minutes\\ \textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\ 500&7.5\\ x&360 \end{array}\implies \cfrac{500}{x}=\cfrac{7.5}{360} \\\\\\ \textit{that'll give you, }\boxed{?}\textit{ grams of glass for 6hrs}\\\\ \textit{divide by 1000 to make it Kgs}\implies \cfrac{\boxed{?}}{1000}Kgs \\\\\\ \textit{is 5cents per Kgs of glass, so }\cfrac{\boxed{?}}{1000}\cdot 5](https://tex.z-dn.net/?f=%5Cbf%20%5Cbegin%7Barray%7D%7Bccllll%7D%0Agrams%26minutes%5C%5C%0A%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%26%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%5Ctextendash%5C%5C%0A500%267.5%5C%5C%0Ax%26360%0A%5Cend%7Barray%7D%5Cimplies%20%5Ccfrac%7B500%7D%7Bx%7D%3D%5Ccfrac%7B7.5%7D%7B360%7D%0A%5C%5C%5C%5C%5C%5C%0A%5Ctextit%7Bthat%27ll%20give%20you%2C%20%7D%5Cboxed%7B%3F%7D%5Ctextit%7B%20grams%20of%20glass%20for%206hrs%7D%5C%5C%5C%5C%0A%5Ctextit%7Bdivide%20by%201000%20to%20make%20it%20Kgs%7D%5Cimplies%20%5Ccfrac%7B%5Cboxed%7B%3F%7D%7D%7B1000%7DKgs%0A%5C%5C%5C%5C%5C%5C%0A%5Ctextit%7Bis%205cents%20per%20Kgs%20of%20glass%2C%20so%20%7D%5Ccfrac%7B%5Cboxed%7B%3F%7D%7D%7B1000%7D%5Ccdot%205)
that's how many "p" (pennies? pence? pounds?) will it be for 6hrs of oven time for Adam
Answer:
78
Step-by-step explanation:
Since 13 is a prime, the least common multiple of it and 6 is their product. 6*13=78. Hope this helps!
Answer:
I would tell you
Step-by-step explanation:
you need to put 2 y and 2 x and that you need to divide
Answer:
The ordered pair is (3, 2).
Step-by-step explanation:
y = -x + 5
2x + y = 8
Substitute y = -x + 5 in the second equation:
2x + (-x + 5) = 8
x + 5 = 8
x = 3.
Now substitute x = 3 into the first equation;
y = -3 + 5
y = 2.