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Helga [31]
3 years ago
11

I NEED HELP!!!!!!

Mathematics
1 answer:
omeli [17]3 years ago
3 0
The answer is 3. because you go -4 on the y axis and go up by 3
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Determine an equation of a Quadratic function
Pepsi [2]

Answer:

y = -4x² + 32x - 48

Step-by-step explanation:

The standard form of a quadratic equation is  

y = ax² + bx + c

We must find the equation that passes through the points:

(2, 0), (6,0), and (3, 12)

We can substitute these values and get three equations in three unknowns.

0 = a(2²) + b(2) + c

0 = a(6²) + b(6) + c

12 = a(3²) + b(3) + c

We can simplify these to get the system of equations:

(1)   0 =    4a + 2b + c

(2)  0 = 36a + 6b + c

(3) 12 =   9a + 3b + c

Eliminate c from equations (1) and (2). Subtract (1) from (2).

(4) 0 = 32a + 4b

Eliminate c from equations (2) and (3). Subtract (3) from (2).

(5) -12 = 27a - 3b

Simplify equations (4) and (5).

(6)  0 = 8a + b

(7) -4 = 9a  - b

Eliminate b by adding equations (6) and (7).

(8) a = -4

Substitute (4) into (6).

    0 = -32 + b

(9) b =  32

Substitute a and b into (1)

0 = 4(-4) + 2(32) + c

0 = -16 + 64 + c

0 = 48 + c

c = -48

The coefficients are

a= -4, b = 32, c = -48

The quadratic equation is

y = -4x² + 32x - 48

The diagram below shows the graph of your quadratic equation and the three points through which it passes.

4 0
3 years ago
Lucy buys baseball cards in packages of 10. List the number
Vlada [557]

Answer:

Write the following numbers in order from smallest value to largest value: 1.75, 1. Justify your answer. 4. If 2x2 – x + 6 is subtracted from x2 + 3x – 2, ...

Step-by-step explanation:

1. Which number is irrational?

(A) (B) (C) 0.3333 (D)

2. In which group are the numbers arranged in order from smallest value to largest value?

(A) π, 3.14, (B) 3.14, π

(C) , 3.14, π, (D) 3.14, , π,

3. Write the following numbers in order from smallest value to largest value:

1.75, 1

Justify your answer.

4. If 2x2 – x + 6 is subtracted from x2 + 3x – 2, the result is

(A) x2 + 2x – 8 (B) x2 – 4x + 8 (C) –x

2 + 2x – 8 (D) –x

2 + 4x – 8

7 0
1 year ago
Which graph represents a function
larisa86 [58]

Answer:

the bottom right graph represents a single function.

Step-by-step explanation:

8 0
3 years ago
The graphs above show the number of students receiving A's in each grade at Bridgeport middle school. which statement is true?
OLga [1]
I think the answer is b
4 0
3 years ago
What is the circumference of this circle <br>​
Levart [38]

Answer:

31.4 cm

Step-by-step explanation:

Let C be the circumference and r be the radius of the circle.

\therefore \: C = 2\pi \: r  \\  \hspace{19 pt}= 2 \times 3.14 \times 5 \\ \hspace{19 pt} = 3.14 \times 10 \\ \hspace{19 pt} = 31.4 \: cm \\

8 0
3 years ago
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