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
mariarad [96]
3 years ago
9

Solve pls for the function -2x²+x+1 find f(3)

Mathematics
1 answer:
castortr0y [4]3 years ago
3 0

Answer:

f(3) = -14

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = -2x² + x + 1

f(3) is x = 3

<u>Step 2: Evaluate</u>

  1. Substitute:                    f(3) = -2(3)² + 3 + 1
  2. Exponents:                   f(3) = -2(9) + 3 + 1
  3. Multiply:                        f(3) = -18 + 3 + 1
  4. Add:                              f(3) = -15 + 1
  5. Add:                              f(3) = -14
You might be interested in
Question 5 (1 point) 5 The Cool Shirts company prints personalized designs on T-shirts. The cost y for x shirts with the same de
Sergeeva-Olga [200]

Answer:

y = 8x + 25

Step-by-step explanation:

Using the coordinates (10, 105) and (20, 185)

The standard linear equation is expressed as y = mx+c

m is the slope

c is the intercept

m = 185 - 105/20-10

m = 80/10

m = 8

Get the y-intercept

Since y = mx+c

105 = 8(10) + c

105 = 80 + c

c = 105 - 80

c = 25

Get the required equation

Recall that y = mx+c

y = 8x + 25

Hence the required equation is y = 8x + 25

6 0
3 years ago
I need to know the answer to this problem. <br><img src="https://tex.z-dn.net/?f=2%20-%202%20%5Ctimes%203%20%2B%203%20%3D%20%20"
algol13
2 - 2 x 3 + 3 

= 2 - 6 + 3

= -4 + 3

= - 1
6 0
4 years ago
The variables x and y are directly proportional, and y=2 when x=3. what is the value of y when x=9?
laiz [17]
X varies directly as y
x = ky
3 = 2k
k = \frac{3}{2}
 when x =9
9 = \frac{3}{2}y
\frac{18}{3} = y
∴y = 6

please mark as brainliest
8 0
3 years ago
Read 2 more answers
Write the equation in slope intercept form of the line passing through the following points (0,5) and (-5, -1).
krek1111 [17]

Answer:

y = 6/5x

Step-by-step explanation:

1. y = \frac{-1-5 }{-5-0}

2. subtract the two number on the top of the fraction bar to get 6

3. do the same for the denominator to get 5

4. your final answer is \frac{6}{5}

7 0
3 years ago
H(x)=3x^2+7<br> h(0)<br> help!
Angelina_Jolie [31]

Answer:

h(0) = 7

Step-by-step explanation:

by saying h(0) it is asking you to plug in 0 as the x value

3(0)^2 = 0

0 + 7 = 7

8 0
2 years ago
Other questions:
  • Does anyone know if this is correct
    11·2 answers
  • There are 20 light bulbs in 5 packages.Complete the table to find the rate that gives you the number of light bulbs in 3 package
    11·1 answer
  • What is the slope of segment BC?
    12·2 answers
  • The following quadrilateral is a parallelogram.
    14·1 answer
  • Please Help.<br> Algebra.
    12·1 answer
  • What is the left-hand limit of this function as x approaches 2? f(x)=x/x-2
    10·1 answer
  • Which of the following equations has a slope of -3 and a y-intercept of 8? *
    8·1 answer
  • On her 21st birthday, Sydney deposited $400 in a new bank account that earns 3.7% interest compounded continuously. If there are
    11·1 answer
  • A. C=22d<br> B. C= d + 22d<br> C. C= d + 22<br> D. D = 22c
    13·1 answer
  • 4800 persons run a marathon, 1200 reach the finish line. What is the percent of people reach the finish line at the marathon?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!