zoedaejohnson
28.06.2019 •
Mathematics
(plz, im desperate! )a certain bakery has found that the daily demand for bran muffins is 7700/p, where p is the price of a muffin in cents. the daily supply is 3p-100. find the price at which supply and demand are equal.
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Ответ:
P = 70 cents per muffin
Step-by-step explanation:
It says to find the price when the supply and demand are equal, so you have to set the two equations equal to each other.
7700/p = 3p-100.
It seems to me that the best way to solve this would be to set up a quadratic equation.
If you multiply both sides by p and then subtract 7700, you get the following:
0=3p^2 -100p -7700
I wrote a program to solve this, and I got the answers p= 70 and -36.67.
Obviously, a negative number doesn’t work in this situation, so the answer is 70 cents per muffin. To check this, you can plug it back into the equation:
7700/70=3(70)-100
110=110
Ответ:
3.62 units
Step-by-step explanation:
The mnemonic SOH CAH TOA reminds you of the relation between the side adjacent to the angle and the hypotenuse:
Cos = Adjacent/Hypotenuse
cos(34°) = AB/AC
AC = AB/cos(34°) = 3/cos(34°) ≈ 3.619 ≈ 3.62 . . . units
For right triangle ABC with A an angle of 34°, AB of length 3, and AC the hypotenuse.