All categories

4 years ago

How do u find the domain of radical functions.

1 answer:

3 0

First determine the index of the radical

If the index is an even number, set the expression inside the radical greater than or equal to zero.

Solve the equation found above :)

You might be interested in

Evaluate given function. Pleas helpp

Bad White [126]

Answer:

$f(9) =-80$

Step-by-step explanation:

Given

The attached functions

Required

Find f(9)

We have:

$f(x) =-x^2 - 2x + 19$

So:

$f(9) =-9^2 - 2*9 + 19$

$f(9) =-81 - 18 + 19$

$f(9) =-80$

6 0

3 years ago

A bottle contains 3.78 liters of water. Without

gulaghasi [49]

1 deciliter equals 0.1 liter. So If a bottle contains 3.78 liters of water that’s 37.8 deciliter so there is more than 3.78 deciliter in a bottle of water

4 0

3 years ago

A company makes concrete paving stones in different sizes. Each stone has a volume of 30 cubic inches and a height of 3 inches.

Zepler [3.9K]

Answer:

There are 5 different sized paving stones that can have a volume of 360 in³.

Step-by-step explanation:

Volume = Area x height.

We are given;

volume; V = 360 in³

Height; h = 3 in

Thus, 360 = A x 3

A = 360/3 = 120 in²

This is the area of the base, so we need to find the number of different stones which have a base area of 120 in².

Let's list all the factors of 120 which are;

1,2,3,4,5,6,10,12,20,24,30,40,60,120

The question says we shouldn't use 1 or 2 in inches as length and width.

Leaving us with the remaining listed factors.

So the pair of factors that give and area of 120 are;

Size;

3 x 40

4 x 30

5 x 24

6 x 20

10 x 12

Thus, there are 5 different sized paving stones that can have a volume of 360.

5 0

3 years ago

What type of solutions will a quadratic equation have when the discrimination b^2 - 4ac in the quadratic formula is negative? (p

lys-0071 [83]

Answer:

Step-by-step explanation:

The discriminant comes from the quadratic formula. We use the discriminant to determine, before factoring, what types of solutions we can expect when we do factor. In the quadratic formula, the discriminant is under a square root sign. If the number under a square root sign is negative (meaning the discriminant is negative), we will not have real number solutions because you can't have a negative number under a square root. So a is your choice.

5 0

3 years ago

A wheel with radius 1 m is rolled in a straight line through one complete revolution on a flat horizontal surface. How many metr

Artyom0805 [142]

Answer:

6.28 m

Step-by-step explanation:

If a wheel travels with one full revolution, it would have travelled the circumference's distance from it's starting point.

The circumference of a circle is $2\pi r$