All categories

3 years ago

Is x=15 a function?

Mathematics

2 answers:

Mama L [17]3 years ago

7 0

Answer:

yes i do believe so

Step-by-step explanation:

ioda3 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:

You might be interested in

The Metropolitan Bus Company claims that the mean waiting time for a bus during rush hour is less than 5 minutes. A random sampl

Wewaii [24]

Answer:

Decision is reject the $H_0$ as There is sufficient evidence to support the claim that the mean time is less then 5 minutes.

Step-by-step explanation:

Consider the provided information.

The mean waiting time for a bus during rush hour is less than 5 minutes.

Thus the null hypothesis is:

$H_0: \mu\geq 5$

$H_1: \mu< 5$

A random sample of 20 waiting times has a mean of 3.7 minutes with a standard deviation of 2.1 minutes. At α = 0.01,

Now use the table to find the z value, where α = 0.01,

$t_L = -2.3264$

The value of n is 20, sample mean is 3.7, population mean is 5 and standard deviation is 2.1.

Now, use the formula: Standardized test statistic for z-scores = $t=\frac{\bar x-\mu_0}{{s}/{\sqrt{n} }}$ .

Substitute the respective values in the above formula.

$t=\frac{3.7-5}{{2.1}/{\sqrt{20} }}$

$t=\frac{-1.3}{0.47}$

$t=-2.768465115\approx-2.77$

As, the test statistic is in the reject interval, so reject $H_0$

There is sufficient evidence to support the claim that the mean time is less then 5 minutes.

7 0

4 years ago

Please Help pt 2 I don't understand any of this

dedylja [7]

Answer: $\bold{(D)\ \dfrac{3}{4}-\dfrac{1}{4}x}$

<u>Step-by-step explanation:</u>

$\ \ \dfrac{3}{4}-x\bigg(\dfrac{1}{2}-\dfrac{5}{8}\bigg)+\bigg(-\dfrac{3}{8}x\bigg)\\\\\\=\dfrac{3}{4}\bigg(\dfrac{2}{2}\bigg)-x\bigg[\dfrac{1}{2}\bigg(\dfrac{4}{4}\bigg)-\dfrac{5}{8}\bigg]+\bigg(-\dfrac{3}{8}x\bigg)\\\\\\=\dfrac{6}{8}-x\bigg(\dfrac{4}{8}-\dfrac{5}{8}\bigg)-\dfrac{3}{8}x\\\\\\=\dfrac{6}{8}-x\bigg(-\dfrac{1}{8}\bigg)-\dfrac{3}{8}x\\\\\\=\dfrac{6}{8}+\dfrac{1}{8}x-\dfrac{3}{8}x\\\\\\=\dfrac{6}{8}-\dfrac{2}{8}x\\\\\\=\dfrac{3}{4}-\dfrac{1}{4}x\quad \text{(reduced both fractions)}$

7 0

3 years ago

Is there anyone who can help me with math in a tutoring session?

storchak [24]

Answer:

Depends on the math

Step-by-step explanation:

4 0

3 years ago

Please help this us so confusing

tamaranim1 [39]

Answer:

The surface area of the prism is 48 units².

Step-by-step explanation:

Remember, a net is simply the outer surface of a 3D shape flattened and spread out as a combination of 2D shapes.

With this info, the rest is relatively easy.

The net shows that there are 4 rectangular sides and 2 square sides. We also know the lengths and widths of all of them.

One rectangle is 5 units long and 2 units wide. One square is 2 units long and 2 units wide.

Let's put this into an equation.

4( 5*2 ) + 2( 2*2)

We are adding the areas of the rectangles and squares.

So, let's simplify that equation.

4(10) + 2(4)

40 + 8

6 0

3 years ago

Make x the subject of <br> z= x/y - 3r

asambeis [7]

Answer:

x = y(z + 3r)

Step-by-step explanation:

Given

z = $\frac{x}{y}$ - 3r ( add 3r to both sides )

z + 3r = $\frac{x}{y}$ ( multiply both sides by y )

y(z + 3r) = x

6 0

3 years ago

Read 2 more answers

Is x=15 a function?​

Is x=15 a function?