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
goldfiish [28.3K]
4 years ago
14

What is the equation, in standard form, of a parabola that models the values in the table?

Mathematics
1 answer:
kirza4 [7]4 years ago
5 0
<span> f(x) = ax^2 + bx + c

f(0) = ax^2 + bx + c = 5, c = 5
f(-2) = 4a + -2b + 5 = 1 ----------(1)
f(4) =16a + 4b + 5 = -59 ----------(2)
4a -2b = -4
</span><span>16a + 4b = -64 
16a + 4(-2-2a)= -64
16a - 8 - 8a = -64
8a = -56
<span>a = 7
</span>4a - 2b = -4 
28 - 2b = -4
b = 16

</span><span>f(x) = 7x^2 + 16x + 5</span>
You might be interested in
Order the numbers by value.<br> LEAST to GREATEST<br><br>10<br>√99<br>√75<br>9<br>9.5​
beks73 [17]

Answer:

√75, 9, 9.5, √99, 10

Step-by-step explanation:

that's what I got

4 0
3 years ago
HELP P L E A S E ! !
alex41 [277]

Answer:

A is true but I dont know the rest I am very sorry   .-.

Step-by-step explanation:

I Just added 18 + 12 = 30 + 10 = 40 and that is why A is true

3 0
3 years ago
If there are 4 trucks for every 5 cars how many trucks and cars are there?
Rom4ik [11]

Answer:

Step-by-step explanation:

^^there are 20 Trucks in total  And 5 cars

8 0
3 years ago
Read 2 more answers
G a survey of property owners' opinions about a street-widening project was taken to determine if owners' opinions were related
Naily [24]

Answer:

The expected frequency for people against the project and who have over 120 feet of property foot frontage is 3.9.

Step-by-step explanation:

The data provided is:

                                                   Opinion    

Front Footage   For       Undecided Against    Total

Under 45 feet    12                4              4              20

  45-120 feet           35                5             30      70

Over 120 feet     3                2              5              10

       Total           50                11             39    100

The formula to compute the expected frequency is:

E(X)=\frac{\text{Row Total}\times \text{Column Total}}{\text{TOTAL}}

Compute the expected frequency for people against the project and who have over 120 feet of property foot frontage as follows:

E(X)=\frac{\text{Row Total}\times \text{Column Total}}{\text{TOTAL}}

E(5)=\frac{10\times 39}{100}=\frac{39}{10}=3.9

Thus, the expected frequency for people against the project and who have over 120 feet of property foot frontage is 3.9.

6 0
3 years ago
Mrs. Adenan sold 63 bracelets at one craft fair and 36 bracelets at a second craft fair. Which expression correctly applies the
stellarik [79]
63 + 36...there is a common factor of 9
9(7 + 4) <== this is equivalent

63 + 36...there is a common factor of 3
3(21 + 12)...but this is not an answer choice...but it is equivalent
7 0
4 years ago
Other questions:
  • jay needs 19 quarts more paint for the outside of his barn than for the inside. If he uses 107 quarts in all, how many gallons o
    5·2 answers
  • 34 divided by what equals 17
    15·2 answers
  • Lines g, h, and l are parallel and m 2 = 132°.
    13·1 answer
  • What is an equation of the line that passes through the point (-4,-3) and is perpendicular to the line 2x+3y=15
    7·1 answer
  • Find the value of C in the isosceles triangle shown below<br> Answer
    8·1 answer
  • Pre Calculus, Trigonometry Help
    11·1 answer
  • A textbook store sold a combined total of 470 biology and history textbooks in a week. The number of history textbooks sold was
    7·1 answer
  • Find the diagonal of a square whose sides are of the given measure. <br>Given = 6"​
    5·1 answer
  • PLEASE HELP 46 POINTS!!!
    12·1 answer
  • PLZ SHOW WORK 250 POINTS<br><br> how do you do 1/4 x 750,000
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!