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Tpy6a [65]
2 years ago
13

Sarah wants to print copies of her artwork. At the local print shop, it costs her $1 to make 5 copies and $5 to make 25 copies.

Which equation represents this direct variation?
Please help!!

Mathematics
2 answers:
pishuonlain [190]2 years ago
8 0

Answer: y = 1/5x

Step-by-step explanation:

Those numbers both equal 1/5

Ierofanga [76]2 years ago
6 0

Answer:

i wanna say B

Step-by-step explanation:

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A printer prints an average of 200 1/2 pages per hour approximately how many pages did it print in an 8 hour period
Vika [28.1K]

Answer:

1,604 pages

Step-by-step explanation:

Let’s make a proportion

The printer prints 200 1/2, or 200.5 pages per hour, and prints x pages per 8 hours

200.5/1=x/8

Cross multiply

1*x=200.5*8

x= 1604

So, the printer prints 1,604 pages in & hours

7 0
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If e^(xy) = 2, then what is dy/dx at the point (1, ln2)
PSYCHO15rus [73]
By implicit differentiation: 

<span>(x(dy/dx) + y)e^(xy) = 0 </span>

<span>Note that when differentiating e^(xy), apply chain rule. When differentiating xy, use product rule. Also: When differentiating y w/respect to x, think of that as if you are differentiating f(x). </span>

<span>Then, substitute (1,ln(2)) and solve for dy/dx. </span>

<span>(1(dy/dx) + ln(2))e^(1ln(2)) = 0 </span>
<span>((dy/dx) + ln(2))e^(ln(2)) = 0 </span>

<span>Note that e^(ln(2)) = 2 since e and ln are inverse of each other. </span>

<span>2((dy/dx) + ln(2)) = 0 </span>
<span>dy/dx + ln(2) = 0 . . . . You get this expression by dividing both sides by 2 </span>
<span>dy/dx = -ln(2) . . . . . . .Subtract both sides by ln(2) </span>

<span>Therefore, dy/dx = -ln(2) </span>

<span>I hope this helps!</span>
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2 years ago
Tonya plans to join a fitness club. She researched the costs to join different clubs in her area and found that there is a linea
Blababa [14]

Answer: The correct answer is 1

Step-by-step explanation:

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KATRIN_1 [288]

Hey!!

Additive inverse = the opposite

The square root of 52 is 7.2 ( approx )

the additive inverse is -7.2

Hope my answer helps!

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2 years ago
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