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
bazaltina [42]
3 years ago
13

9. The equation y = x2 - 1 is

Mathematics
1 answer:
SashulF [63]3 years ago
3 0
It depends on whether or not you have written the question correctly. If the 2 is an exponent, it needs to be preceded by a ^. Otherwise, it is considered a multiplier.
x^2 = x²
x2 = x⋅2

y = x²-1 is nonlinear and nonproportional.
You might be interested in
115% of what number is 120?
antiseptic1488 [7]
115% is the same as 1.15
some number = x

115% of some number is 120
1.15 of x is 120
1.15 * x = 120
\frac{1.15*x}{1.15} = \frac{120}{1.15}
x = 104.3478
x ≈ 104.3

Hope this helps! :)
4 0
3 years ago
Read 2 more answers
Pls help it due ASAP <br> Show workings <br> Pleaseeeeeeeeeeeee
Talja [164]
D
5 + 29 = 34/2 = 17
7 - 15 = -8/2 = -4
(17,-4)
3 0
2 years ago
A circle with a radius of 9 millimeters.
andriy [413]

Answer:

You didnt give us a question to answer, just a statement.

Step-by-step explanation:

7 0
2 years ago
The formula d = rt gives the distance traveled in time t at rate r. A bicyclist rides at a
Nesterboy [21]

D = rt

We are given the rate r to be 15 mph.

We are given the time (in hours) to be 3.5.

We need to find D.

D = (15)(3.5)

D = 52.5 miles.

Did you follow?

6 0
3 years ago
Can someone help me understand how to do this quadratic math problem
Juliette [100K]

Answer:

  put all of the expressions into the same form, such as standard form

Step-by-step explanation:

When you're trying to determine whether one expression is equivalent to another, you need to put both of the expressions into the same form. This will generally require some algebraic manipulation using the rules of equality.

Here, you're given a quadratic in standard form. From what we can see of the one partial answer, some of the choices are in vertex form. To determine if they are equivalent, you can do either of two things ...

  1. Put the given expression into vertex form
  2. Expand the answer choice to put it in standard form

___

<em>For multiple-choice questions</em> of this type, it is often sufficient to look at one or two terms of the different equations. That is usually all it takes to separate a good answer from a bad one.

You can start with the x^2 term. Any answer choice that has an x^2 coefficient different from 1 will be rejected.

Next, you can look at the sign of the x term. Any answer choice that doesn't have a positive x term will be rejected.

Finally, you can look a the constant term. Any answer choice that doesn't have a constant term of +4 will be rejected.

___

As it happens, the given equation is a perfect square, so one equivalent is ...

  y = (x +2)^2

_____

When working with quadratics, it can be helpful to memorize a couple of the ways they can be written:

  (x +b)^2 = (x^2 +2bx + b^2)

This is a special case of ...

  (x +a)(x +b) = x^2 +(a+b)x + ab

3 0
3 years ago
Other questions:
  • A health clubs membership fee is $10 per month for students and $25 per month for all other members. The health club had a total
    15·2 answers
  • Mr. Lobo is building a France around his rectangular yard. It is 16 feet long and 14 feet wide. How many feet of fencing will he
    11·2 answers
  • A motel clerk counts his​ $1 and​ $10 bills at the end of the day. He finds that he has a total of 55 bills having a combined mo
    8·2 answers
  • What is 2x + 3x simplified
    7·2 answers
  • I need help nowwww pleaseeee it anyone can see this
    7·1 answer
  • Stuck on these questions. any help? <br><br>(last word missing is degree)​
    10·1 answer
  • Find the equation of the line that is
    12·2 answers
  • Someone help fast!!<br> please
    13·1 answer
  • Solve for X (step by step please)<br>3 (x - 2) = 4x + 2 <br>[?]x - [ ] = 4x + 2​
    6·1 answer
  • Check
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!