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
enyata [817]
3 years ago
8

F(x) = 7 - 5x + 7x2 find f(-9)

Mathematics
2 answers:
Law Incorporation [45]3 years ago
7 0

Answer:

Step-by-step explanation:

F(x) = 7 - 5x + 7x²

f(-9) = 7 - 5*(-9) + 7*(-9)²

       = 7 + 45 + 7*81

      = 7 + 45 + 567

      = 619

blondinia [14]3 years ago
4 0

Answer:

f(-9) = 619

Step-by-step explanation:

To solve for f(-9), plug -9 in for x in the equation of f(x). In other words, change all x's into -9 in the equation 7 - 5x + 7x² and then solve.

f(x) = 7 - 5x + 7x²

Plug in -9 for x.

f(-9) = 7 - 5(-9) + 7(-9)²

Simplify. 5(-9) = -45,   7(-9)² = 7(81) = 567

f(-9) = 7 + 45 + 567

Solve.

f(-9) = 619

The answer is 619.

I hope this helps. If you need clarifications of anything, feel free to ask. Happy studying. :)

You might be interested in
A choir teacher is dividing 3 sopranos and 12 altos into singing groups. he wants each group to have the same combination of sop
Andreyy89
You can have a maximum of 3 groups. This is due to the fact that you only have 3 sopranos to equally divide between groups. Over 3 you would have a group lacking a soprano so 3 is the greatest you can make it.
7 0
3 years ago
A radio station is giving away a $100 bill to every 30th caller and movie tickets to every 40th caller. Which call will be the f
Ymorist [56]

Answer:

120th caller

Step-by-step explanation:

According to the problem, calculation of the given data are as follows,

$100 bill = 30th caller

Movie tickets = 40th caller

So, to find out first to win both prizes, we will use LCM method,

LCM of 30 and 40 =       10 | 30 , 40

                                            | 3    , 4

LCM of 30 and 40 = 10 × 3 × 4 = 120

Hence, 120th caller will be the first to win both prizes.

3 0
3 years ago
Which number line represents the solutions to 1-2x1 = 4?
kaheart [24]

Answer:

Third option: x = -2 and x = 2

Step-by-step explanation:

Given:

|-2x|=4

For a modulus function, if |f(x)|=a, then,

f(x)=\pm a

Here, f(x)=-2x, a=4

∴ -2x=\pm 4\\ -2x=-4\textrm{ or } -2x=4\\ x=\frac{-4}{-2}\textrm{ or }x=\frac{4}{-2}\\ x= 2\textrm{ or }x=-2

Therefore, the third option is the correct answer as the graph has x values as -2 and 2

8 0
3 years ago
2x-1<br> Evaluate the algebraic expressions for the given values of the variable
igor_vitrenko [27]
<span>An algebraic expression is an expression constructed from a number of constants and variables utilizing algebraic operations. These algebraic operations are addition, subtraction, multiplication, division, and exponentiation. A constant is constant, so its value is unchanged. A variable changes based on the value provided. In the provided example, 2x-1, there are two constants, "2" and "1", and one variable "x." The algebraic operations utilized are multiplication and subtraction. In order to evaluate the value of the algebraic expression, the given value for the variable must be substituted for the variable x, and then the algebraic operations executed to obtain the answer. For instance, if you were told that the value of x in this case was 2, then you would substitute the value 2 for x and perform the described operations. Remember to follow the order of operations when evaluating an algebraic expression! 2x-1 for x=2 2(2) - 1 4 - 1 3 is the answer. Remember, even though the multiplication operation is not explicitly stated, it is implied that a constant attached to a variable (termed a coefficient) is multiplied with the value of the variable.</span>
5 0
3 years ago
Find the suface area of this trangular prism.
Talja [164]
The answer will be 37 yd. Hope it help!
5 0
3 years ago
Other questions:
  • (x+5)(x-5) Multiplying special case polynomials
    11·1 answer
  • Which statement about the radius of a sphere is true?
    7·2 answers
  • Two lines are perpendicular if they are para el and cross
    13·1 answer
  • The sum of a number and 6 is greater than or equal to –4 =
    7·1 answer
  • What is the range for this set of data?<br> 7, 15, 12
    8·1 answer
  • sallys cup cake shop sold a total of 63 cupcakes yesterday and 32 of those had sprinkles how many cupcakes were sold without spr
    15·1 answer
  • Find the measure of the label angles below note: you must find y first
    10·1 answer
  • For the equation x-3y=12, what is x when y=8?​
    12·2 answers
  • What is the product ?
    13·2 answers
  • Examine Carmen's plans for rail lines at a train station.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!