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
Natali [406]
2 years ago
11

PLEASE HELP!!! If f(x) = -2x^2 + x - 5, what is f(3)?

Mathematics
2 answers:
kow [346]2 years ago
4 0

Answer:

  • <u>f(3) = -10</u>

Step-by-step explanation:

<u>Given</u>

  • f(x) = -2x² + x - 5

<u>Solving</u>

  • To find f(3), substitute x = 3 in the function
  • ⇒ f(3) = -2(3)² + (3) + 5
  • ⇒ f(3) = -2(9) + 8
  • ⇒ f(3) = -18 + 8
  • ⇒ <u>f(3) = -10</u>
Vesna [10]2 years ago
3 0

Answer:

f(3) = 6

Step-by-step explanation:

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

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

f(3) = 8 + 3 - 5

f(3) = 11-5

f(3) = 6

You might be interested in
tyler sells candy and popcorn. Altogether he sold 15 items. He sells candy for $2 and pop corn $4 and eanred $36. How much candy
9966 [12]

Answer:

candy= 11 popcorn=4

Step-by-step explanation:

11x2=22

4x4=16

16+22=36

8 0
3 years ago
Will give brainliest answer
nexus9112 [7]

Answer:

No

Step-by-step explanation:

The Triangle Inequality Theorem states that the sum of any 2 sides of a triangle must be greater than the measure of the third side.

We see that: 4.1 + 1.3 < 8.4

=> Can't  form a triangle from 4.1 cm, 8.1 cm and 1.3 cm

5 0
3 years ago
Prove usin's Mathematical induction 2^n ≤(n+1)!, for n≥0​
Westkost [7]

Answer:

Step-by-step explanation:

2^0 is less than or equal to 1!, because 1<= 1

if 2^n <= (n+1)!, we wish to show that 2^(n+1) <= (n+2)!, since

(n+2)! = (n+1)! * (n+2), and (n+1)!>= 2^n, then we want to prove that n+2<=2, which is always true for n>=0

8 0
2 years ago
Evaluate: 6q + m − m; use m = 8, and q = 3
adelina 88 [10]

Answer:

your answer is 18

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
mr and mrs gracia took their three children to see a matinee on saturday. they spent a total of 55.50, which included 29.95 at t
andrezito [222]

First, you would subtract 29.95 from 55.50, and you get 25.55. because 5 people went, and the cost for each was the same, you would divide 25.55 by five, and get $5.11 per person.
3 0
3 years ago
Other questions:
  • Which value is an output of the function?<br> -6<br> -2<br> 4<br> 7
    15·1 answer
  • the scale factor of the dimensions of two similar wood floors is 5 : 4. It costs $368 to refinish the smaller wood floor.
    8·2 answers
  • If y = 3 when X = -9 find X when y =5
    6·1 answer
  • 5/6-1/3= (reduced form please)
    8·2 answers
  • The length of a flower garden is 9 meters. The width of the garden, w, is unknown. If the area of the garden is greater
    11·1 answer
  • Can someone explain why the answer is true. Will Mark brainliest.
    13·1 answer
  • Find x to the nearest 10th<br> (18x-12)<br> a 2.7<br> b 8.7<br> c 12.7<br> d. 10.7
    8·1 answer
  • Fill in the blanks to make each equation true
    10·1 answer
  • What's the prime number grater than 20​
    14·2 answers
  • I dont know what it is and its for <br> ten pointsss
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!