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mrs_skeptik [129]
3 years ago
7

Can someone help please!

Mathematics
1 answer:
GarryVolchara [31]3 years ago
6 0
This is for the first one

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Someone please help me
Anika [276]

Answer:

A

Step-by-step explanation:

Given

a = \frac{1}{x} - \frac{1}{y} = \frac{y-x}{xy} ← as a single fraction

Thus

\frac{1}{a} = \frac{1}{\frac{y-x}{xy} } = \frac{xy}{y-x} → A

6 0
3 years ago
What is the value of k(-6)<br> Please help!!!
velikii [3]

Answer:

35

Step-by-step explanation:

This is a piecewise function.

Since the value being asked to evaluate is -6, choose the part of the function that is applicable.

You would focus on  x\geq -6 since you were given a -6 to evaluate.

Then use the expression that describes the function at that location.

x^{2} - 1

Plug in your value of -6

(-6)^{2}-1\\ 36-1\\35

4 0
3 years ago
in spring 2017, data was collected from a random selection of sta 2023 students. one of the question how many concerts they had
Over [174]

Answer:

Step-by-step explanation:

5

4 0
3 years ago
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mariarad [96]

Answer:

A) greatest integer function

Step-by-step explanation:

7 0
3 years ago
Which of the following statements best describes the graph of x + y = 2? (5 points)
Mademuasel [1]
This line has an x-intercept at y = 0, x = 2. (First statement is false.)
Its y-intercept is at x = 0, y = 2. (Second statement is false.)
The third statement is true, as adding the x- and y-coordinates should sum up to 2, as in the equation "x + y = 2".
The fourth statement is false, since this description would fit the equation x + y = 4.

Therefore the third statement is the correct one.
7 0
4 years ago
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