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pickupchik [31]

2 years ago

15

ILL BRAINLIEST YOU AND GIVE YOU 30 EXTRA POINTS PLEASE HELP ME

1 answer:

lidiya [134]2 years ago

4 0

Answer:

can you help me on this it wont let me ask a question.

and then i will help you

expelnation

Ms. Levi is purchasing standing desks for her classroom. She wants to set up the desks to minimize the amount of desk height adjusting by the students and decides to use the mean height of students in her math class as a guide. Rather than using the heights of all students in her class, she decides to collect a random sample of students in her class.

What is the population for this problem?

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Help please:Suppose that x and y inversely, and x=10 when y=8 write the function that models the inverse variation

jarptica [38.1K]

SOLUTION

From the question, we are told that y varies inversely as x

This is mathematically written as

$\begin{gathered} y\propto\frac{1}{x} \\ \propto\text{ is a sign of proportionality } \end{gathered}$

Now, we will remove the proportionality sign and replace it with equal to sign =

If we do this, we will intoduce a constant k

$\begin{gathered} y\propto\frac{1}{x} \\ y=k\times\frac{1}{x} \\ y=\frac{k}{x} \end{gathered}$

So we have the formula

$y=\frac{k}{x}$

We will substitute the values of x for 10 and y for 8 into the formula to get k, we have

$\begin{gathered} y=\frac{k}{x} \\ 8=\frac{k}{10} \\ k=8\times10 \\ k=80 \end{gathered}$

Now, we will substitute k for 80 back into the formula to get the inverse function, we have

$\begin{gathered} y=\frac{k}{x} \\ y=\frac{80}{x} \end{gathered}$

Hence the answer is option C

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1 year ago

Awesome autos car detail charges $30 for a full service detail on SUVs. The equation 30x+45y=450 represents the amount that must

Zina [86]

Answer:

x intercept = 15 # of cars to detail if no SUVs

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3 years ago

What number is 12% of 315

goldenfox [79]

Answer:

12% of 315 is 37.8 :) Tag me if I'm wrong

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2 years ago

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Find the equation of the quadratic function with vertex (– 2, – 6) that goes through the point (-4, -18)

torisob [31]

Answer:

y = -3(x+2)^2 - 6

Step-by-step explanation:

y = a(x+2)^2 -6

-18 = a(-2)^2 - 6

-12 = 4a

a = -3

y = -3(x+2)^2 - 6

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1 year ago

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Kitty [74]

Answer:

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3 years ago