1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Salsk061 [2.6K]
2 years ago
7

Find the domain of this quadratic function. y = x2 – 2x-1 -2 -0 No links plz!

Mathematics
1 answer:
Serga [27]2 years ago
7 0

Answer:

- ∞ < x < ∞

Step-by-step explanation:

The domain of a quadratic function is all real values of x , that is

- ∞ < x < ∞

You might be interested in
Find an equation of the plane that contains (3, 4, −9) and is parallel to x + y − 5z = 1. (Use x, y, and z for coordinates.)
emmainna [20.7K]

Answer:

x + y - 5z = 52

Step-by-step explanation:

Given data:

Point on the plane (3,4,-9)

parallel to x + y -5z = 1

Finding the normal vector

(1 , 1 , -5)(x, y , z) = 1

the normal vector is (1 , 1 , -5)

<em>formula for finding equation the plane given the normal vector (a,b,c) and point (m,n,o) is as </em>

<em>a(x - m) + b(y - n) + c(z-o)=0</em>

Substituting the data we have

1(x-3) + 1( y- 4) - 5(z+9) =0

x-3 +y -4 -5z -45 = 0

x + y - 5z = 45 +4 +3

x + y - 5z = 52

6 0
3 years ago
The areas of two similar triangles have a ratio of 4:25. what is the ratio of their perimeters​
Fittoniya [83]

Answer:

2:5

Step-by-step explanation:

8 0
3 years ago
Solve the system of equations by graphing. <br><br> x+y=3<br> y=2x−15
Stella [2.4K]

Hey!

Hope this helps...

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

x + y = 3

x = 3 - y


y = 2x - 15

y = 2(3 - y) - 15

y = 6 - 2y - 15

y = -2y - 9

3y = -9

y = -3


y = 2x - 15

-3 = 2x - 15

-2x = -12

x = 6


So...

The answer is: (6, -3)

4 0
3 years ago
Read 2 more answers
What is x^2=7x <br><br> number 9
ipn [44]

Let's do this in steps, show your work!

<u>#1. We need to move all terms to one side.</u>

<u>x^2 - 7x = 0</u>

<u>#2. Then factor out the common term x.</u>

<u>x(x - 7) = 0.</u>

<u>#3. Simplify to get..</u>

<u>x = 0, 7.</u>

<u />

If you need help with any other question let me know.

<u />

8 0
3 years ago
PLEASE ITS EASY I FOGOT HOW TO DO IT
AfilCa [17]

Answer:

x> -1

Step-by-step explanation:

Open circle means > or <

5 0
2 years ago
Other questions:
  • Can you help me with question 8?
    12·1 answer
  • Look at the pattern below.How should the tird shape be labeled<br>​
    5·1 answer
  • What is the the union for the following sets.
    8·1 answer
  • A person died leaving property worth Rs 4000.40. His widow got 0.125 of the property. His son got 0.4 of the remainder. What did
    8·2 answers
  • Find the value of each expression in simplest form <br> 14 1/5 - 5 5/6
    8·1 answer
  • 11/12 2/3​ Replace each with , or = to make a true statement.
    15·1 answer
  • A container has 15 red cards and a number of yellow cards. A card is chosen at random from the container. The probability of cho
    6·1 answer
  • SOLVE THIS <br>VERY IMPORTANT QUESTION​
    7·1 answer
  • A/b x 8c<br> when a=2/3<br> b=1/2<br> c=3/4
    15·1 answer
  • Find the volume of the sphere in terms of π.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!