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
masya89 [10]
3 years ago
7

OMG PLEASE HELP IF YOU CAN 14 POINTS!!!!!! For each function what is the output for the given input? f(x) = 5x+1, find f(-4)

Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
3 0
<span>f(x) = 5x+1
f(-4) = 5(-4) + 1 = -20 + 1 = -19


hope that helps
</span>
You might be interested in
Silas took 17 bags of glass to the recycling center. He still has 8 bags of plastic to take to the recycling center. Which equat
Masja [62]
I think it’s C. X+17 = 8
4 0
3 years ago
What is the first step in solving the equation 2/3x+1/3+2=5?
julsineya [31]

The first step is combining like terms. On the left side of the equation add all the numbers together that don't have and x (1/3 +2)

Hope this helped! Let me know if there is anything else I can do!

7 0
3 years ago
I NEED MATH HELP, QUICK! PLEASE HELP ME!
Pavlova-9 [17]
When x is -1 Y will equal -1
8 0
3 years ago
Which trigonometric function has a range that does not include 0.4?
Montano1993 [528]
<h2>Hello!</h2>

The answer is: y=cscx

<h2>Why?</h2>

Domain and range of trigonometric functions are already calculated, so let's discard one by one in order to find the correct answer.

The range is where the function can exist in the vertical axis when we assign values to the variable.

First:

y=cosx: Incorrect, it does include 0.4 since the cosine range goes from -1 to 1 (-1 ≤ y ≤ 1)

Second:

y=cotx: Incorrect, it also does include 0.4 since the cotangent range goes from is all the real numbers.

Third:

y=cscx: Correct, the cosecant function is all the real numbers without the numbers included between -1 and 1 (y≤-1 or y≥1).

Fourth:

y=sinx : Incorrect, the sine function range is equal to the cosine function range (-1 ≤ y ≤ 1).

I attached a pic of the csc function graphic where you can verify the answer!

Have a nice day!

8 0
3 years ago
What are the solutions of the equation 9x4 – 2x2 – 7 = 0? Use u substitution to solve. tions of the equation 9
skelet666 [1.2K]

Answer:

Step-by-step explanation:

Let u^2=x^4\\u = x^2

Subbing in:

9u^2-2u-7=0

a = 9, b = -2, c = -7

The product of a and c is the aboslute value of -63, so a*c = 63.  We need 2 factors of 63 that will add to give us -2.  The factors of 63 are {1, 63}, (3, 21}, {7, 9}.  It looks like the combination of -9 and +7 will work because -9 + 7 = -2.  Plug in accordingly:

9u^2-9u+7u-7=0

Group together in groups of 2:

(9u^2-9u)+(7u-7)=0

Now factor out what's common within each set of parenthesis:

9u(u-1)+7(u-1)=0

We know this combination "works" because the terms inside the parenthesis are identical.  We can now factor those out and what's left goes together in another set of parenthesis:

(u-1)(9u+7)=0

Remember that u=x^2

so we sub back in and continue to factor.  This was originally a fourth degree polynomial; that means we have 4 solutions.

(x^2-1)(9x^2+7)=0

The first two solutions are found withing the first set of parenthesis and the second two are found in other set of parenthesis.  Factoring (x^2-1) gives us that x = 1 and -1.  The other set is a bit more tricky.  If

9x^2+7=0 then

9x^2=-7 and

x^2=-\frac{7}{9}

You cannot take the square root of a negative number without allowing for the imaginary component, i, so we do that:

x=±\sqrt{-\frac{7}{9} }

which will simplify down to

x=±\frac{\sqrt{7} }{3}i

Those are the 4 solutions to the quartic equation.

5 0
3 years ago
Other questions:
  • Solve for x. 2+x/9 = 4/6
    6·1 answer
  • Now, jump on or back the tens and then the ones to find the answer.
    7·1 answer
  • Can anyone answer 2 through 4 for me ?
    11·1 answer
  • 2x-7&gt;9 OR -3(x-5)&gt;12
    6·2 answers
  • Help needed asap idk anything
    15·2 answers
  • The shorter leg of a right triangle is 18 meters. The hypotenuse is 6 meters longer than the longer leg. Find the length of the
    7·1 answer
  • How to simplify 7 - 9x - 25 into an expreesion
    12·2 answers
  • The frequency (f) and the wavelength (w) of a sound traveling in air is the equation fw=343. If the frequency is 200 what is the
    14·1 answer
  • April took out a $600 loan from the
    6·1 answer
  • 4x² + 24x + 20<br> common factor =
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!