All categories

3 years ago

What is the domain of f(x) = - x2

Mathematics

1 answer:

Verdich [7]3 years ago

8 0

Answer:

the domain is (-inf,inf)

Step-by-step explanation:

inf = infinity

You might be interested in

In a right triangle one acute angle measures 48 more than 2 times the other. If the sum of the measure of the two acute angles m

Ainat [17]

A given angle measures 90°.. Then, note that the total measurement of the triangle is 180°... Subtract 180° by 90°, and the other angles must add up to 90°!

Good luck!

3 0

3 years ago

Let X denote daily work hours. Suppose that for the sample of workers you have, the average daily work hours are 8 hours, with

lubasha [3.4K]

Answer:

The mean for Z is 40.

The standard deviation for Z is 25.

Step-by-step explanation:

We are given the following in the question:

X: daily work hours.

The average daily work hours are 8 hours, with a standard deviation of 5.

$E(x) = 8\\S.D(X) = 5$

$Var(X) = 5^2 = 25$

Z denote weekly work hours.

We have to find the mean and standard deviation for Z.

$E(Z) =E(5x) = 5\tims E(X) = 5\times 8 = 40$

The mean for Z is 40.

We use the property:

$Var(ax) = a^2Var(x)$

$Var(Z) = Var(5x) = 5^2(Var(X)) = 25\times 25 = 625\\S.D(Z) = \sqrt{625} = 25$

Thus, the standard deviation for Z is 25.

6 0

3 years ago

Solve x2 = 12x – 15 by completing the square. Which is the solution set of the equation?

REY [17]

X ·2 = 12x - 15

2x = 12x - 15

2x + (-12x) = (12x - 15) + (-12x)

Result: x = 3/2

8 0

4 years ago

Read 2 more answers

(0) 14 -7 0<br> | () 14 - 7 0

lyudmila [28]

Answer:

What is the question.

5 0

4 years ago

The volume of a right cylinder is 3,600Tt cubic centimeters, and the

Blizzard [7]

Answer:

Radius of cylinder is r = 8.464 cm

Step-by-step explanation:

Volume of right cylinder = 3600 cm³

Height of cylinder = 16 cm

Radius of cylinder = ?

The formula used is: $Volume= \pi r^2h$

Putting values and finding radius

$Volume= \pi * r^2 *h\\3600=3.14*r^2*(16)\\3600=50.24*r^2\\r^2=\frac{3600}{50.24}\\r^2=71.65\\\sqrt{r^2}=\sqrt{71.65}\\r=8.464 \ cm$

So, Radius of cylinder is r = 8.464 cm

8 0

3 years ago