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
Blizzard [7]
3 years ago
14

F(x) = 2x^2 – 5x; find f(3)​

Mathematics
2 answers:
Reptile [31]3 years ago
8 0

Answer:

f(3)=3

Step-by-step explanation:

This question asks us to find f(3). We want to find what f(x), or y is, when x is equal to 3.

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

Substitute 3 in for x.

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

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction

Evaluate the exponent first. 3^2 is the same as 3*3, which is equal to 9.

f(3)=2(9)-5(3)

Multiply 2 and 9

f(3)=18-5(3)

Multiply 5 and 3

f(3)=18-15

Subtract 15 from 18

f(3)=3

Nookie1986 [14]3 years ago
4 0

Answer:

f(3) = 3

Step-by-step explanation:

f(x) = 2x^2 – 5x

Let x = 3

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

      = 2*9 -15

      = 18-15

      =3

You might be interested in
Which change will triple the lateral surface area of a cone?
Fudgin [204]
The answer for this would be the second answer choice
This is because when the slant height is tripled, the overall lateral surface area is tripled
The best way to explain this would be through an example. 

Say that the lateral height is 2 and the radius is 1. The lateral surface area is 6.28

Now, if I make the lateral height 6, which is triple the original lateral height, the lateral surface area becomes 18.84, which is triple the original surface area

Therefore, the answer is choice 2

Hope this helped!! :D
6 0
3 years ago
Read 2 more answers
Aubrey has a new art box in the shape of a rectangular prism. The box is 12 cm by 5cm
tia_tia [17]
LWH-LWH
=12*20*5-4*2*0.5
=1200-32
=1168 cubic cms
5 0
3 years ago
Read 2 more answers
Vaughn is calculating the volume of the cylinder below using the following work
ch4aika [34]

Answer:

He confused the height and the diameter

Step-by-step explanation:

the formula should have looked like this

V= 3.14 (2.5)^2 (24)

the reason why it is 2.5 and not 5 is because 5 is the diameter so divide 5 by 2 and you get 2.5

V= 3.14 (6.25) (24)

V= 3.14 (150)

V= 471

6 0
3 years ago
Read 2 more answers
I think that the conclusion is AB is congruent to DE and reasoning is subtraction property, but need someone to check
jenyasd209 [6]

Answer:

yes that is correct if they are on the same line

4 0
3 years ago
Help pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
ki77a [65]
Im 90% sure it’s H (pls mark as brainliest
8 0
3 years ago
Read 2 more answers
Other questions:
  • Factor this expression completely, then place the factors in the proper location on the grid. 5x3 + 40y6
    8·2 answers
  • Find the diagonal of the square whose side are of the given measure GIVEN=5
    11·1 answer
  • It’s solve system by elimination!!! plz help asap
    15·1 answer
  • Write the ratio of corresponding sides for the similar triangles and reduce the ratio to lowest terms.
    7·1 answer
  • What is - 1.8 = h - 4.7?
    6·2 answers
  • Four times the sum of f and g is identical to six times g
    14·2 answers
  • Evaluate the numerical expression.
    6·2 answers
  • 3. Simplify: 13.6 - 4.1 - 3.8 + 6.7
    7·2 answers
  • PLZ ANSWER ASAP IN NEED OF ANSWERS WILL AWARD BRAINLIEST!!!
    8·1 answer
  • Compute <img src="https://tex.z-dn.net/?f=i%2Bi%5E2%2Bi%5E3%2B%5Ccdots%2Bi%5E%7B258%7D%2Bi%5E%7B259%7D" id="TexFormula1" title="
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!