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2 years ago

5

Is x=15 a function?

2 answers:

Mama L [17]2 years ago

7 0

Answer:

yes i do believe so

Step-by-step explanation:

ioda2 years ago

4 0

Answer:So x=15 does not define a function. Another way of describing the condition above is that x=15 fails the vertical line test - the requirement that any vertical line intersects the graph in at most one point. This fails when x=15 because a vertical line at that point intersects the graph at infinitely many points.

Step-by-step explanation:

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!!!!!!!!!!!!!!!!!!!!

Andru [333]

Answer:

$f^{-1}(x)=4x+20$

Step-by-step explanation:

<u>Given</u>

<u /> $f(x)=\frac{x}{4}-5\\ \\y=\frac{x}{4}-5$

<u>Swap x and y and solve for y</u>

<u /> $y=\frac{x}{4}-5\\ \\x=\frac{y}{4}-5\\ \\x+5=\frac{y}{4}\\ \\4(x+5)=y\\\\y=4x+20$

<u>Final answer</u>

<u /> $f^{-1}(x)=4x+20$

Keep in mind that we need to swap the variables because a function and its inverse are symmetrical about the line y=x. See the graph below.

3 0

2 years ago

Write <br> 23/25 as a percent

Firdavs [7]

3 / 25 = x / 100

<span>23/25 = 0.92 = 92/100 </span>

<span>x = 92%</span>

8 0

3 years ago

Read 2 more answers

Determine which of the following is a rectangle form of a complex number.

Varvara68 [4.7K]

Answer:

A) a+bi

Explanation:

Rectangular form of complex numbers is written as a+bi, where a and b are integers.

Rectangular form always has an integer piece, a, and a complex piece, bi.

4 0

2 years ago

If the minute hand of a clock moves 45 degrees, how many minutes of time have passed?

Tcecarenko [31]

Answer:

45 minutes have passed

Step-by-step explanation:

1 degree = 1 minute

6 0

2 years ago

Find the distance between the points (-5,7) and ( -5,-4)

Lubov Fominskaja [6]

Answer:

11

Step-by-step explanation:

8 0

2 years ago