All categories

2 years ago

Which domain restrictions apply to the rational expression?

Mathematics

1 answer:

dimulka [17.4K]2 years ago

5 0

1) it must be fulfilled that the denominator is different from zero, then for this expression

x^2 -9 ⇒ x^2-3^2 = (x-3)(x+3)⇒ (x-3)(x+3) = 0 ⇒ x = 3 o x = -3 , the dominium is all numbers reals except 3 and -3

You might be interested in

The population of center city is modeled by exponential function f, where x is the number of years after the year 2015

Vladimir [108]

Find the ratio of the area to the square radius for each circle.

6 0

2 years ago

PLEASE HELP HURRY!!!!!!!!!

Rzqust [24]

Answer:

PC = 14.42 cm

Step-by-step explanation:

If a tangent and secant are drawn from a point outside a circle, then the product of the lengths of the segments of the secant is equal to the square of the length of the tangent.

PC² = PB × BD

PC² = 4 × 52

PC² = 208

PC = $\sqrt{208}$

PC = 14.42 cm

6 0

3 years ago

The volume of the cylinder below is 225 pi cubic centimeters. If you doubled the radius of the of cylinder, which statement belo

Oduvanchick [21]

The volume of the cylinder will be 900π cube cm.

Step-by-step explanation:

Given,

The volume of the cylinder 225π cube cm

Let the radius be r and the height be h.

To find the volume when the radius is doubled.

Formula

The volume of cylinder = π $r^{2} h$

According to the problem,

π $r^{2} h$ = 225

When the radius is 2r the volume will be = π $(2r)^{2} h$

=4π $r^{2} h$

=4×225π cube cm

= 900π cube cm

7 0

3 years ago

2 QUESTIONS 50 POINTS!!! Question 1: A car's odometer starts at 25 miles and for every 25 miles traveled, 1 gallon of gas is use

Arte-miy333 [17]

Answer:

1: is in fact graph 3 2: however I do not use a ray tool so sorry on that one brother

5 0

2 years ago

Estimating Square Roots Word Problems

Alekssandra [29.7K]

..................shshhshshshshshsshhsshsshhsh

3 0

3 years ago