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
ivolga24 [154]
3 years ago
9

If f(x) = -2x2 + x-5, what is f(3)?

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
7 0

Answer:

f(3) = -20

Step-by-step explanation:

Replace each instance of x in 3^2x -9 =0 with 3:

f(x) = -2x2 + x-5 =  f(x) = -2x^2 + x-5 (" ^ " represents "exponentiation")

f(3) = -2(3)^2 + 3 - 5

f(3) = - 18 - 2 = -20

You might be interested in
Both fractions in the expression of 1/3 +1/3 are examples of...
kirza4 [7]
Equivalent fractions
7 0
3 years ago
Point A(–4, 2) is reflected over the line x = 3 to create the point A'. What are the coordinates of A'?
iragen [17]
A ( - 4, 2)
Reflected over x = 3.
x = 3 is a vertical line, the point (-4, 2) is 7 units on the left side of the vertical line. When you reflect across the line to the right side we need to be 7 units away from the vertical line on the right side. 3 + 7 = 10
The x value would be 10. (10, 2)
LETTER D
8 0
3 years ago
What is the distance between points M(6,-6) and Z(2,-3), to the nearest tenth?
cupoosta [38]

distance b/w points M(6,-6) and Z(2,-3)

= √(-6+3)^2 + (6-2)^2)

= √( 3)^2 + 4^2

= √(9+16)

=√25

= 5

6 0
3 years ago
Double Points! (i have no clue how to do this)<br> Find the value of the variables in the figure.
Aleks [24]

Answer:

x=12 and y=31

Step-by-step explanation:

First, ( 5x - 7 ) and ( 3x + 17 ) are alternate interior angles, which means they are congruent, or equal:

5x - 7 = 3x + 17

Add 7 to each side:

5x = 3x + 24

Subtract 3x from both sides:

2x = 24

Divide each side by 2:

x = 12

Now we can see that ( 5x - 7 ) and ( 4y + 3 ) are supplementary angles, which means they will add up to 180 degrees:

5x - 7 + 4y + 3 = 180

Substitute 12 in for x to solve for y:

5 ( 12 ) - 7 + 4y + 3 = 180

60 - 7 + 4y + 3 = 180

combine like terms:

( 60 + ( -7 ) + 3 ) + 4y = 180

56 + 4y = 180

Subtract 56 from each side:

4y = 124

Divide each side by 4:

y = 31

6 0
3 years ago
Is The sum of two prime numbers always a prime number and why or why not
astra-53 [7]
Yes because two odds make a positive
7 0
3 years ago
Other questions:
  • If 52 is 130% of a number, is the number greater or less than 52? Explain.
    14·1 answer
  • Simplify. y^-3 pls help me i need this very bad
    9·1 answer
  • ALEXANDRA BUYS SWEATSHIRTS FOR $12 EACH . IN HER STORE SHE SELLS EACH SWEATSHIRTS BY 25%
    10·1 answer
  • What is the value of y?
    11·2 answers
  • Which law would you use to simplify the expression (x^4)^9?
    6·2 answers
  • Translate into a variable expression.<br> fifteen more than one-half of the square of z
    10·1 answer
  • Would the answer be .0115 Km?
    8·2 answers
  • The equation y minus two-thirds = negative 2 (x minus one-fourth) is written in point-slope form. What is the equation in slope-
    7·1 answer
  • Unscramble the letters lgnoe
    7·1 answer
  • Find the area of this circle.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!