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Alekssandra [29.7K]
3 years ago
13

Someone please help i don't understand this at all! Suppose that gold is selling at $375/ounce. How many mmilligrams can you buy

for one cent? (16 oz=1 lb; 1 lb=454 g)
Mathematics
1 answer:
NARA [144]3 years ago
7 0
This is about changing over units - the primary piece of onformation is the cost of gold in dollars per ounce ($375). On the off chance that you partition 454g by 16 you get the quantity of grams in one ounce (28.38). So now we can state that $375 gets you 28.38g of gold. 1 penny is a considerable amount less obviously - in actuality it's 37500 times less, on the grounds that there are 100 pennies for every dollar and 375 dollars for each ounce. So in the event that you partition 28.38 grams by 37500 you'll find your solution in grams. Duplicate this response to change over into milligrams on the grounds that there are 1000 milligrams for each gram. 
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Max makes and sells posters. The function p(x)= -10x^2 +200x -250, graphed below, indicates how much profit he makes in a month
viktelen [127]
Here is our profit as a function of # of posters
p(x) =-10x² + 200x - 250
Here is our price per poster, as a function of the # of posters:
pr(x) = 20 - x
Since we want to find the optimum price and # of posters, let's plug our price function into our profit function, to find the optimum x, and then use that to find the optimum price:
p(x) = -10 (20-x)² + 200 (20 - x) - 250
p(x) = -10 (400 -40x + x²) + 4000 - 200x - 250
Take a look at our profit function. It is a normal trinomial square, with a negative sign on the squared term. This means the curve is a downward facing parabola, so our profit maximum will be the top of the curve.
By taking the derivative, we can find where p'(x) = 0 (where the slope of p(x) equals 0), to see where the top of profit function is.
p(x) = -4000 +400x -10x² + 4000 -200x -250
p'(x) = 400 - 20x -200
0 = 200 - 20x
20x = 200
x = 10                         
p'(x) = 0 at x=10. This is the peak of our profit function. To find the price per poster, plug x=10 into our price function:
price = 20 - x
price = 10
Now plug x=10 into our original profit function in order to find our maximum profit:
<span>p(x)= -10x^2 +200x -250
p(x) = -10 (10)</span>² +200 (10) - 250
<span>p(x) = -1000 + 2000 - 250
p(x) = 750

Correct answer is C)
</span>
7 0
3 years ago
Help pls ill give max points
katrin2010 [14]

Answer:

C

Step-by-step explanation:

The original is L, if it was roated 180 degrees clockwise it would be in the same spot

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