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4 years ago

Hannah and Francine have $120. Hannah and Peter have $230. Peter has 6 times as much money as Francine. How much money does Hann

ah have?

Mathematics

1 answer:

aivan3 [116]4 years ago

5 0

$x-Francine's\ money\\6x-Peter's\ money\\120-x-Hanna's\ money\\\\120-x+6x=230\\-x+6x=230-120\\5x=110\ \ \ |:5\\x=22\\\\6x=6\cdot22=132\\\\120-22=98\\\\Hanna\ has\ \$98$

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1000 balls

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2 years ago

A supply company manufactures copy machines. The unit cost C (the cost in dollars to make each copy machine) depends on the numb

ArbitrLikvidat [17]

Answer:

$9327

Step-by-step explanation:

Apparently, the cost function is supposed to be ...

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This can be rewritten to vertex form as ...

C(x) = 0.4(x^2 -280) +17167

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C(x) = 0.4(x -140)^2 +9327

The vertex of the cost function is ...

(x, C(x)) = (140, 9327)

The minimum unit cost is $9327.

_____

Comment on the question

You found the number of units that result in minimum cost (140 units), but you have to evaluate C(140) to find the minimum unit cost.

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3 years ago