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
katen-ka-za [31]
3 years ago
14

PLEASE HELP!! if f(x)= 2x^2-11, find f(4)

Mathematics
2 answers:
Lemur [1.5K]3 years ago
4 0

Answer: f(4) = 21

Step-by-step explanation:

2(4)^2-11

4^2 = 16

2(16)-11

Multiply 2 and 16

32 - 11

Subtract

21

goldenfox [79]3 years ago
4 0

Answer:

21

Step-by-step explanation:

f(x)= 2x^2-11

Let x= 4

f(4)= 2*4^2-11

    = 2 * 16 - 11

     = 32 -11

      21

You might be interested in
The distance by rail from Leicester to Londonis 100 miles.
Zarrin [17]

The arrival time in london of a train that leaves Leicester to london at 11:50 A.M is 13:05 pm.

To calculate the arrival time in london of a train that leaves Leicester to london at 11:50 A.M, use use the formula below.

Formula:

  • Ta = [(d/s)+11:50]....... Equation 1

Where:

  • Ta = Arrival time
  • d = distance from Leicester to London
  • s = Speed

From the question,

Given:

  • d = 100 miles
  • s = 80 mph

Substitute these values into equation 1

  • Ta = [(100/80)+11:50]
  • Ta = 1.25h+11:50
  • Ta = 1 hours 15 minutes +11:50
  • Ta = 13:05 pm

Hence, the arrival time in london of a train that leaves Leicester to london at 11:50 A.M is 13:05 pm.

Learn more about time here: brainly.com/question/4931057

5 0
2 years ago
Tell whether –4 is a solution of the inequality.<br> —3x + 2 &lt; 15. YES OR NO?
NikAS [45]

Answer:

YES

Step-by-step explanation:

-3 times -4 = 12

12 + 2 = 14

14 < 15

7 0
3 years ago
Find the value of z. <br><br> 2v~2<br> 6v~2<br> 3<br> 2
Pie
Suppose the sides of the big triangle are called m, x and 12+4=16. We have that the big triangle and the small triangle to the right of the shape (sides x,y,12) are similar. We can take then the ratios of correponding sides and know that they will be equal. Thus, we have that 4/y=y/12. Hence, y*y=48. Thus y=\sqrt{48} = 4 \sqrt{3}.
3 0
4 years ago
Preform the indicated operation.
Tems11 [23]

Answer:

34325

Step-by-step explanation:

3 0
3 years ago
Prove that sec^4 (x)=1+2 tan^2 (x)+tan^4 (x)
IgorC [24]

Answer: sec^4(x)-tan^4(x) = 1+2 x tan^2(x)

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • a student has some $1 and $5 bills in his wallet. He has a total of 13 bills that are worth $33. How many of each type of bill d
    9·2 answers
  • What is the surface area, in square inches, of a sphere with radius 3.5 in.?
    5·2 answers
  • Write the equation for the horizontal line that contains point G(3, 4).
    8·2 answers
  • Solve the equation:<br>5 - 20 =<br>– 15<br>Enter answer below<br>Enter your response​
    7·2 answers
  • 10 4/5 - 2 1/5<br> I am having trouble finding this answer please help
    14·2 answers
  • A quiz consists of 4 true-false questions. What is the probability of getting 100% on the quiz by randomly guessing the answer t
    13·2 answers
  • Please help! Thanks in advance!!
    7·1 answer
  • If the following data were transformed, and points with the coordinates
    9·1 answer
  • How many inches deep is snow just before it begins to melt?
    9·1 answer
  • Write an equation for the line (in slope-intercept form) that passes through the given point with the slope m. (0, -7); m = -7
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!