2 years ago

I really need math help, it’s slopes

Mathematics

1 answer:

zalisa [80]2 years ago

6 0

Same LOL first tru the ones with the rise and run showed then try the others remember y=mx+b and your rules

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A jeweler wants to minimize business costs and has found that the average cost in dollars per necklace is given by C(x)=0.5x^2-7

Vika [28.1K]

Answer:

The maximum cost is 41 dollars per necklace.

Step-by-step explanation:

The average cost in dollars/necklace is given by :

$C(x)=0.5x^2-7x+65.5$ .....(1)

Where

x is the number of necklaces that are created

To maximize the cost, find the value of x by putting dC/dx = 0

$\dfrac{d}{dx}(0.5x^2-7x+65.5)=0\\\\x-7=0\\\\x=7$

Now put the value of x = 7 in equation (1).

$C(x)=0.5(7)^2-7(7)+65.5\\\\=41\ \text{dollars per necklace}$

Hence, the maximum cost is 41 dollars per necklace.

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2 years ago

Simplify to create an equivalent expression. 2(3r+7)−(2+r)

tamaranim1 [39]

2(3r+7)−(2+r)

Use distributive property:

6r + 14 - 2 - r

Simplify by combining like terms:

5r +12

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3 years ago

an insurance company sells a policy that pays $50,000.00 in case of accidental death. According to company figures, the rate of

aliya0001 [1]

Answer: $23..50 see attachment for the explanation.

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2 years ago

Which number is written in scientific notation?

Elis [28]

If I'm right it could be C. IF I'M RIGHT, I'm not totally sure but I hope this helps.

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2 years ago

Find the equation of a line parallel to -3x-5y=4 that contains the point (4,3). Write the equation and slope intercept form

allsm [11]

Answer:

y= 10

Step-by-step explanation:

-3x-5y=4

+3x +3x

-5y=7x

+5y +5y

y= 10

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2 years ago