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
MrMuchimi
3 years ago
9

The table shows some values of a function of the form y = ax2 + bx + c.

Mathematics
1 answer:
nadezda [96]3 years ago
8 0

Answer:

  c = 5

Step-by-step explanation:

We can find a, b, c by filling in values from the table into the equation:

  17 = a(2²) +b(2) +c

  32 = a(3²) +b(3) +c

  53 = a(4²) +b(4) +c

__

There are numerous ways to solve 3 linear equations in 3 unknowns. We can use elimination.

Subtracting the first equation from each of the other two, we get ...

  15 = 5a +b . . . . . . . . . note that c has been eliminated from the equations

  36 = 12a +2b

Subtracting twice the first from the second gives ...

  (12a +2b) -2(5a +b) = 36 -2(15)

  2a = 6

  a = 3

__

Now that we have a value for "a", we can "back substitute" into the equations to find "b" and "c".

Substituting this into 15 = ..., we get ...

  15 = 5(3) +b

  0 = b

And substituting for "a" and "b" in the first original equation gives ...

  17 = 4(3) +c

  5 = c

The value of c, the constant of the function, is 5.

You might be interested in
Katie's swim team is having an end-of-season pizza party. When the party started, there was 50 slices of pizza. Now there are 20
kotykmax [81]

Answer:

30alice of pizza they eat

5 0
3 years ago
A number t multiplied by -4 is at least - 2/4
iris [78.8K]
-4t> -2/4
Turn sign because dividing negative
4t<-1/2
-4/2
T<-2
—
5 0
3 years ago
If you could please kindly help :D
BartSMP [9]

Answer:

y = -1/2 ( x − 4 )^2 + 8

Step-by-step explanation:

First find the vertex form

y = a ( x − h )^ 2 + k  where ( h,k) is the vertex

The vertex is  ( 4,8)

y = a ( x − 4 )^2 + 8

Now we need to determine a

Pick a point on the graph (0,0)

and substitute this point into the equation

0 = a ( 0 − 4 )^2 + 8

0 = a (16) +8

-8 = 16a

-8/16 =a

-1/2

y = -1/2 ( x − 4 )^2 + 8

7 0
3 years ago
50 POINTS - A Builder intends placing 7 equally spaced homes on a semicircular plot. If the circle has a diameter of 400 feet, w
Ray Of Light [21]

Answer:  89.7 ft

<u>Step-by-step explanation:</u>

Find the arc length (s) of the semi-circle.  Then divide that length by 7.

s = r · θ      where r is the radius and θ is the angle in radians

s = (400 ÷ 2) · π        <em>(radius is diameter divided by 2)</em>

  = 200π

  = 628.3

The length of the arc is 628.3 ft.  Divide that by 7 to find the distance between each home.

628.3 ÷ 7 = 89.7

3 0
3 years ago
Solve for y: 1/2(4y+6)=4-2(y-6)/3​
gizmo_the_mogwai [7]

Answer:

0.09

Step-by-step explanation:

hope it helps thank you

8 0
2 years ago
Read 2 more answers
Other questions:
  • ⦁ Find the area of the trapezoid. Show your work and explain how you solved using First, Next, and Last. (Please help! and thank
    6·1 answer
  • The top of a ladder slides down a vertical wall at a rate of 0.375 m/s. At the moment when the bottom of the ladder is 3 m from
    5·1 answer
  • Which shows three hundred five million,two hundred eighty thousand, four hundred ninety-six written in standard form?
    11·1 answer
  • Jerome uses the formula, P = 2DB, to find approximate six month premium when his driver risk factor, d, is 1.02 and the basic si
    15·1 answer
  • THIS IS URGENT I NEED HELP ASAP PLEASE
    8·1 answer
  • A band must pay a $2500 entrance fee, It will split the cost between its 25 members. How much will each member pay?
    14·2 answers
  • Calculate the following
    13·1 answer
  • Rearrange y= -3/4x + 2 in standard form with a positive lead to coefficient
    15·1 answer
  • 2y - 3x + 6x - y<br> simplify this for me ?
    12·2 answers
  • What is inequality notation and in interval notation? My teacher did not explain this to me and now I am stumped on my homework
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!