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
stepladder [879]
4 years ago
10

Evaluate f(x) = 5x2 - 4x - 9 for f(-2)

Mathematics
1 answer:
Svetllana [295]4 years ago
8 0

Answer:

99

Step-by-step explanation:

5x^2 -4x -9

5(-2)^2 -4(-2) -9

-10^2 +8 -9

100-1

99

You might be interested in
What are the next three terms in the sequence -1, 9, 19, 29
slega [8]

39. each term is ten more than the term before it :)

8 0
4 years ago
Read 2 more answers
Which graph represents the equation x2 8y
LekaFEV [45]

Therefore by making a line through following points we can make graph which is parabola in shape

<h3>What is equation ?</h3>

Two things are equal, according to an equation. Like this: 9 + 2 = 11 . It will have an equivalent sign "=". According to that equation, "this equals that" is expressed as "what is on the left (9 + 2) is equal to what is on the right (11).

Here,

Given Equation : x² = 8y

Given Equation agrees with conventional equation of parabola on positive y-axis

x² = 4ay

Comparison of the two equations yields,

4a = 8 ⇒ a = 2

Focus of parabola = ( 0 , 2 ) ( 0 , 2 )

Parabola vertex equals ( 0 , 0 )

Axis of Symmetry = y-axis

To sketch its, we find some points

with x = 4 or -4 we get

4² = 8y ⇒ 16 = 8y ⇒ y = 2

So, points are ( 4 , 2 ) and ( -4 , 2 ) ( -4 , 2 )

we obtain when x = 8 or -8.

(-8)² = 8y ⇒ 64 = 8y ⇒ y = 8

So, points are ( 8 , 8 ) and ( -8 , 8 ) ( -8 , 8 )

Therefore by making a line through following points we can make graph which is parabola in shape

To know more about equation , visit

brainly.com/question/10413253

#SPJ4

The correct question is :-

Which graph represents the equation x2 = 8y?

3 0
2 years ago
Is point​ K(10,16) or point​ L(12,12) closer to point​ J(6,4)? Explain.
katrin [286]

point K and J grew up together there like brothers , so I would say they would be the closer duo. Your welcome;)

4 0
2 years ago
5. AC bisects Angle BAD. Find the measure of angle BAC.
Diano4ka-milaya [45]
60 12×5 is 60 all you really need to look at is the 12
3 0
4 years ago
Can i get help with this math?
Airida [17]
Sorry but am just in grade 1
7 0
3 years ago
Other questions:
  • For the function, f(x) = -5x 2, find f(-4).
    7·1 answer
  • What is the length of DC?<br><br> 2 units<br> 3 units<br> 6 units<br> 9 units
    5·2 answers
  • [Reposting because I never got help]
    10·1 answer
  • What is the solution to the following system of equations?
    12·1 answer
  • A spinner has eight congruent sections numbered 1 through 8. If the spinner is spun 1000 times, about how many times would it be
    12·2 answers
  • An animal gained 5<br> kilograms steadily over 10 years what is the unit rate kilograms per year
    8·1 answer
  • Six times the sum of a number and four is -12. Find the number and show work.
    5·1 answer
  • A manager purchased a total of 25 short sleeved and long sleeved shirts. Each short sleeved shirt costs $15 and each long sleeve
    13·1 answer
  • Plz help me
    13·2 answers
  • Collin has 25 pounds of dog food. He feeds the dog 1.252 pounds. How much dog food does Collins have?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!