3 years ago

PLSS HELP DUE IN 30 MINUTES!!!!!

Mathematics

1 answer:

Citrus2011 [14]3 years ago

6 0

Answer:

penis

Step-by-step explanation:

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The profit function, y, for selling x shirts is given by the equation y=-0.1x^2+10x. What is the maximum value of the profit, y?

Alex73 [517]

2 ways
1 calcluls
2. algebra

calculus, just take the deritivive and find wher it is 0
y=-0.2x+10
at x=50
sub 50 for x in original
y=250

algebra
for
y=a(x-h)²+k
(h,k) is vertex
k is maximum value

complete the square
y=(-0.1x²+10x)
y=-0.1(x²-100x)
take 1/2 of -100 and square it and add negative and positive inside
-100/2=-50, (-50)²=2500
y=-0.1(x²-100x+2500-2500)
factor perfect square
y=-0.1((x-50)²-2500)
exand
y=-0.1(x-50)²+250

vertex at (50,250)
producing 50 units yeilds a sale price of $250

max price is $250

8 0

3 years ago

lenny deposits $7,000 in an IRA. What will be the value of his investment in 3 years if the investment is earning 1.95% per year

lorasvet [3.4K]

Step-by-step explanation:

The interest is 1.95 percent.

1.95 percent = 1.0195

Value after 3 years =

$1.0195 {}^{3} \times 7000$