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likoan [24]
3 years ago
14

A store sells 12-packs of ballpoint pens for $1.09 each and composition books for $2.79 each. Cindy buys m packs of ballpoint pe

ns and n composition books. The store offers a 5% discount for every 50th customer who makes a purchase. If Cindy gets the 5% discount, which expression will represent Cindy’s bill?
0.05 − 1.09m + 2.79n
1.05 + 1.09m + 2.79n
1.05(1.09m + 2.79n)
0.95(1.09m + 2.79n)
Mathematics
2 answers:
vaieri [72.5K]3 years ago
8 0
I will put 0.95(1.09m+2.79n) as my answer.
Ludmilka [50]3 years ago
5 0
<span>There are two possible ways where you can express this. First, is by presenting the equation net of 5 percent which is "x=1.0355n+2.6505m". The other way to express such is by presenting it with gross amount which is "x= (1-0.05)(1.09n+2.79m)"
</span>
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c(x,y)/(x²+y²)

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Using the chain rule,

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Also, dv/dy = y/√(x²+y²)

Using the chain rule

dV/dy = dV/du × du/dv × dv/dy

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dV/dy = -cy/(x²+y²)

- dV/dy = -(-cy/(x²+y²)) = cy/(x²+y²)

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3 0
3 years ago
Please help me I’m stuck on these questions :(
bagirrra123 [75]

Answer:

Step-by-step explanation:

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=> 240 / 8

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"b" is the y-intercept.

"y" is the y-axis line.

"x" is the x- axis line.

y-intecept means that a point on the graph which has the x value as "0" and y value as anything.

Slope is rise / run.

So, by looking at the graph, we can tell that the y-intecept is (0,0). So, the y-intercept is 0.

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=> 10 - 0 / 2 - 0

=> 10/2

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So, the equation looks like y = 5x.

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So, we can tell that Andrew's hourly pay is 9.5.  Rebecca's hourly pay is 9.25

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