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elixir [45]
3 years ago
12

If y varies inversely with x, and y = -3 when x = 18, find x when y = -2

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
8 0

Answer:

The correct answer would be 12, which isn't one of your options.

Step-by-step explanation:

When finding direct variation, you start with the base equation.

y = kx

Now we can use the initial values of x and y to find k.

-3 = k(18)

-1/6 = k

Now with the value of k, we can model the equation.

y = -1/6x

And we can find the new x by using our new value of y.

-2 = -1/6x

12 = x

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If ABCD is dilated by a factor of 3 the coordinates of A would be
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Answer:

A'=(-9, - 3)

Step-by-step explanation:

A' will be 3*(the coordinates of A), A'=(-9, - 3)

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3 years ago
I need help I neererrrrrtgggh
spin [16.1K]
3^4 = 3 x 3 x 3 x 3

4^3 = 4 x 4 x 4

3^3 = 3 x 3 x 3 = 27

Hope it helps!
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3 years ago
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To get into shape, Miles ran for 1 minute on Monday, 3 minutes on Tuesday, 6 minutes on Wednesday, and 10 minutes on Thursday. I
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Answer: 40 mins

Step-by-step explanation:

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2 years ago
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What is the median of the following string of values?<br> 55, 18, 58, 49, 8, 77, 62, 26, 7.11
LuckyWell [14K]

Answer:

The answer is 49 if we are to assume you meant 7.11 and not 7,11.

If you meant 7,11 - the answer is 28.5.

Step-by-step explanation:

If we are assuming you meant "7,11" and not "7.11", then we would start by removing the lowest and highest numbers from the list respectively, and repeating the process until you only have 1 or 2 numbers left.

Here are the pairs of numbers removed if we are assuming you meant 7.11;

7.11 / 77

8 / 62

18 / 58

26 / 55

We are left with 49, and that would be your median.

However, if we were to assume you meant 7,11, then we'd have to start over and repeat the process.

7 / 77

8 / 62

11 / 58

18 / 55

26 / 49 is our final answer; however we are not to assume this as we need a definite number. To resolve this, we would need to average the two numbers. To do this, we add them together and divide by how many numbers we added.

26 + 49 = 75.

75 / 2 = 28.5

Your median for this would be 28.5.

Hope this helps! Have a great rest of your day. :)

3 0
2 years ago
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Use an equation to find the value of k
Delvig [45]

\boxed{k=4}

<h2>Explanation:</h2>

We know that the slope of a line is given by:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} \\ \\ Where: \\ \\ (x_{1},y_{1}) \ and \ (x_{2},y_{2}) \ are \ points \ that \ lie \ on \ the \ line \\ \\ \\ Here: \\ \\ (x_{1},y_{1})=(-2,k) \\ \\ (x_{2},y_{2})=(2,0) \\ \\ m=-1 \\ \\ \\ -1=\frac{0-k}{2-(-2)} \\ \\ -1=\frac{-k}{4} \\ \\ -k=4(-1) \\ \\ \boxed{k=4}

<h2>Learn more:</h2>

Proportional relationships lines, rates of change, and slope:

brainly.com/question/674693

#LearnWithBrainly

4 0
3 years ago
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