Please help, our teacher didnt explain this, but still assigned hw on it

Answer:

[tex]f(x)=x^2-x-12[/tex]

Step-by-step explanation:

Quadratic Function

Standard Form of Quadratic Function

The standard representation of a quadratic function is:

[tex]f(x)=ax^2+bx+c[/tex]

where a,b, and c are constants.

When the zeros of f (x1 and x2) are given, it can be written as:

f(x)=a(x-x1)(x-x2)

Where a is a constant called the leading coefficient.

We are given the two roots of f: x1=-3 and x2=4, thus:

f(x)=a(x+3)(x-4)

We also know that f(5)=8, thus:

f(5)=a(5+3)(5-4)=8

Operating:

a(8)(1)=8

Solving:

a=1

The function is:

f(x)=1(x+3)(x-4)

Operating:

[tex]\boxed{f(x)=x^2-x-12}[/tex]

Answer:

32..is ur answer..thnk u

Step-by-step explanation:

4/5× 40

4×8

32

(79-65)/65) x 100 = 21.54%

Answer:

The first one is x=4 and the second is x=16

Step-by-step explanation:

This is 100% true I put through photomath

Answer:

A is 4

B is 16

Step-by-step explanation:

Answer:

Your statement is true

Step-by-step explanation:

:|

Answer:

Step-by-step explanation:

Im assuming you the equation in terms of y, that's the conventional thing in high school math.

Add 2y to both sides:

3x = 2y + 11

Subtract 11 from both sides:

2y = 3x - 11

Divide both sides by 2:

y = (3x - 11)/2

Answer:

x=5, y=3

Explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Step-by-step explanation:

x=5 y=3 that is it that guy was right

Answer: It’s 113 cm3

Step-by-step explanation:

I GUESSED ‍♀️

Answer: The graph of y > mx, where m > 0, consists of a dashed line and a shaded half plane. The line has a positive slope and passes through the origin. The shaded half plane is above the line.

Step-by-step explanation:

Answer:

your points should be -1 and 2

Step-by-step explanation:

hope this helps :)

Answer:

x=-1 and 2.

Step-by-step explanation: If you have a calculator, (ti 84), go to math, and Numeric solver. insert the equations. Or you can solve this algebraically

Answer:

A

Step-by-step explanation:

   It would be A, because the two bisector lines that cut through this trapezoid  are the same length, so 5.9-4.1=1.8. So the length of RN would be 1.8. Hope this helps!

Answer:

1.8

Step-by-step explanation:

Answer:

-6(2 x + 3) =-12 x-18 = 0 (after you simplify) :)

Step-by-step explanation:

Answer:

32 F

Step-by-step explanation:

Answer:

2/5

Step-by-step explanation:

8 to 20 is 8/20=4/10=2/5

Answer:

C

Step-by-step explanation:

yards and feet would take to long, miles would be the most efficient

Answer:

[tex]12[/tex] cm

Step-by-step explanation:

If Kelsey knit a total of [tex]6[/tex] cm of scarf over [tex]2[/tex] nights, then we know that she can knit [tex]\frac{6}{2}=3[/tex] cm each night. Therefore, after [tex]4[/tex] nights of knitting, Kelsey would have knit a total of [tex]3*4=12[/tex] cm of scarf in total. Hope this helps!

Answer:

x = - 56

Step-by-step explanation:

Given

[tex]\frac{x}{7}[/tex] = - 8 ( multiply both sides by 7 to clear the fraction )

x = - 56

Answer:

x = -56

Step-by-step explanation:

i just simplified both sides of the equation you could say.

Answer:

i d k

Step-by-step explanation:

The range of the function is given by R = { -3 , 5 , 2 , 0 }

The domain of a function is the set of values that we are allowed to plug into our function. This set is the x values in a function such as f(x). The range of a function is the set of values that the function assumes. This set is the values that the function shoots out after we plug an x value in.

The range is the set of outputs of a relation or function. In other words, it's the set of possible y values. Recall that ordered pairs are of the form (x,y) so the y coordinate is listed after the x. The output is listed after the input.

Given data ,

Let the function relation be represented as set A

Now , the value of set A is given by

Set A = { (-1, -3), (5, 5), (2, 2), (3, 0) }

Now , the range is the set of outputs of a relation

So , it is the set of all possible y values in the relation

Substituting the values in the equation , we get

So , the range of the relation is set R = { -3 , 5 , 2 , 0 }

Therefore , the value of R is { -3 , 5 , 2 , 0 }

Hence , the range of the function is { -3 , 5 , 2 , 0 }

To learn more about domain and range click :

https://brainly.com/question/28135761

#SPJ5

Answer:

[tex]2nd \: term = - 9 + ( - 2) \\ = - 11 \\ 3rd \: term = - 11 +( - 2) \\ = - 13 \\ 4th \: term = - 13 + ( - 2) \\ = - 15 \\ \\ ..........[/tex]

Answer:

28% of the class didn't pass the test.

Step-by-step explanation:

25 - 18 = 7

7/25 = 0.28  or 28%

Thus, 28% of the class didn't pass the test.

Answer:

x = [tex]\frac{32}{3}[/tex] (see below)

Step-by-step explanation:

First, use distributive property:

5 (x + 8) = 8 (x + 1)

5x + 40 = 8x + 8

Then, simplify the equation by combining like terms. You want to isolate the variable to one side of the equation so you can solve for it. Here what I'm talking about:

5x + 40 = 8x + 8

-5x            -5x

-------------------------

40 = 3x + 8

-8           -8

-----------------

32 = 3x

Now, divide both sides by 3 to get the value of x:

3x = 32

x = [tex]\frac{32}{3}[/tex]

or

x ≈ 10.7

Answer:

x= 32/3

Step-by-step explanation:

5(x+8)= 8(x+1)

5x+40=8(x+1)

5x=40=8x+8

5x+40=8x+8

5x+40-40=8x+8-40

5x=8x-32

5x=8x-32

5x-8x=8x-32-8x

-3x=-32

-3x = -32

(Divide both by -3)

x=32/3

Answer:

16,200

Step-by-step explanation:

180 x 90 = 16,200

Answer:

x=4

Step-by-step explanation:

20x+5+24x-1=180

44x=176

x=4

Answer:

It's A.

Step-by-step explanation:

Extorior angles are 2 angles which match together which means 1 angle from outside the triangle matches with another angle in the triangle and form 180 degrees.

Use 180 and minus 78, 73 and 29 degrees separately. Do it until one of your answers match one of the options.

Answer:

x and y

Step-by-step explanation:

Answer:

Equation of the straight line passing through the point ( 4,2) and (7,-3) is

5 x + 4y - 28=0

Step-by-step explanation:

Step(i):-

Given points are ( 4,2 0 and ( 7,-3)

Slope of the line

         [tex]m = \frac{y_{2}-y_{1} }{x_{2} -x_{1} } = \frac{-3-2}{7-4} = \frac{-5}{4}[/tex]

Step(ii):-

Equation of the straight line passing through the point ( 4,2) and

having slope m = [tex]\frac{-5}{4}[/tex]

y - y₁ = m( x- x₁ )

[tex]y - 2 = \frac{-5}{4} ( x-4)[/tex]

4( y -2) = -5( x-4)

4 y - 8 = - 5x +20

5x +4y -8 -20=0

5 x + 4y - 28=0

Final answer:-

Equation of the straight line passing through the point ( 4,2) and (7,-3) is

5 x + 4y - 28=0

Answer:

(4, 3)

Step-by-step explanation:

Please use " ^ " to indicate exponentiation:  (x-4)^2 + 3 = f(x) (which is not 0)

Comparing:

f(x) = (x - 4)^2 + 3 to the general vertex equation

f(x) = (x - h)^2 + k

tells us that the vertex is (h, k):  (4, 3)

Answer:

50%

Step-by-step explanation:

3450 - 2300 = 1150

1150/ 2300 × 100 = 50