Write an equation to match each graph:
f

Answer:

y=1/2(x-6)^2+3/2

Step-by-step explanation:

General equation of parabola centered at (h,k) and axis of symmetry is parallel to y-axis is given as

(x-h)^2=4p(y-k)^2

where

vertex is at (h,k)

p shows the distance of focus from vertex, f = (h, k + p)

and directrix is given at y = k - p

if value of p is >0 then the focus is above vertex

if value of p<0 then focus is below vertex

Given:

focus= (6,2)

directrix y=1

Comparing above with standard formula of parabola, we get

Also distance p is half the distance from the (6,2) to the directix y=1 which is  

1/2=p

As p>0, that means given parabola focus lies above vertex

hence parabola opens upwards

Finding vertex of parabola:

As focus is is at (6,2) and also 1/2 above the vertex so we get vertex at

V=(6,2-1/2)

V=(6,1.5)

Now by comparing above with the standard formula of parabola we have

h=6, k=1.5

Putting values in the formula we get

(x-6)^2=4(1/2)(y-1.5)

(x-6)^2=2(y-1.5)

(x-6)^2=2y-3

Or by re-arranging the terms equation can also be written as

f(x)=1/2(x-6)^2+3/2 !

The equation for a parabola with a focus at (6,2) and a directrix at y=1 is y = (x²-12x+37)/2. It is derived using the definition of a parabola.

The equation of a parabola can be derived using the definition of a parabola: the set of all points that are equidistant from a given point (the focus) and a given line (the directrix). The distance between a point (x,y) on the parabola and the focus (6,2) is equal to the absolute value of the difference between y-coordinate of the point and y-coordinate of the directrix line.

Mathematically, the distance to the focus is (x-6)² + (y-2)² and the distance to the directrix is |y-1|. For any point on the parabola, these distances are equal, so we have (x-6)² + (y-2)² = (y-1)². Solving for y, we obtain the quadratic equation y = (x²-12x+37)/2, which represents the equation of a parabola with a focus at (6,2) and a directrix at y=1.

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Answer:

The Mode is 3 and Median is also 3

Step-by-step explanation:

Answer:

Mean: 2.7

Mode: 3

Median: 3

Range: 4

Step-by-step explanation:

1, 1, 2, 2, 3, 3, 3, 3, 3, 4, 5

Mean: 1 + 1 + 2 + 2 + 3 + 3 + 3 + 3 + 3 + 4 + 5 = 30/11 = 2.7

Mode: 3

Median: 3

Range: 5 - 1 = 4

the like terms are 9x and 7x, if you are told to simplify, you write, "12y+16x"

12y + 9x + 7x

The like terms are 9x and 7x. This is because they both have the x variables attached to the number. This means that you can add only 9x and 7x (not 12y because it isn't a like term) together like normal numbers (except with an x at the end so you would get: 12y + 16x

Hope this helped!

9,12,18 is a right triangle and so is 30,72,90

T= O/A

Tan(46)= x/35

Tan(46)×35= x= 36.2435... ft

Answer:

Any number times zero is zero.

Step-by-step explanation:

Simplify the following:

0 g f

Hint: | Any number times zero is zero.

0 g f = 0:

Answer:  0

Answer:

Step-by-step explanation:

Answer alternate interior

I believe

Answer:

alternate interior

Step-by-step explanation:

it should be this not sure though

Answer: $8

Step-by-step explanation:

If 2.00 was 25%, then 25% * 4 = 100

2 * 4 = 8

Answer: 3 units

Step-by-step explanation:

the volume of a cone C = πr²h/3

C = 18π, h =2x, r = diameter/2 = 2x/2 =x

18π = π* x²* 2x/3

divide through by π

18 = x² * 2x/3

multiply through by 3

54 = 2x³

divide through by 2

27 = x³

x =∛27 = 3

x = 3 units = radius

Answer:

a. x² + x - 30 = (x + 6)(x - 5)

b. -3x² + 23x - 14 = -[(3x - 2)(x - 7)]

c. 2x² - 5x + 4 can not factorize by this way

d. 6x² + 10x - 24 = 2[(3x - 4)(x + 3)]

Step-by-step explanation:

* To factor a trinomial in the form ax² ± bx ± c:

- Look at the c term

# If the c term is positive

∵ c = r × s ⇒ r and s are the factors of c

∴ r and s will have the same sign (sign of b)

∵ a = h × k ⇒ h , k are the factors of a

∴ rk + hs = b

∴ (hx + r)(kx + s) ⇒ if b +ve  OR  (hx - r)(kx - s) ⇒ if b -ve

# If the c term is negative

∵ c = r × s ⇒ r and s are the factors of c

∴ r and s will not have the same sign

∵ a = h × k ⇒ h and k are the factors of a

∴ rk - hs = b OR hs - rk = b

(hx + r)(kx - s) OR (hx - r)(kx + s)

* Now lets solve the problem

a. x² + x - 30

∵ ax² + bx + c

∴ a = 1 , b = 1 , c = -30

∵ c is negative

∴ r and s have different signs

∵ a = h × k

∵ 1 = 1 × 1

∴ h = 1 , k = 1

∵ c = r × s

∵ c = -30

∴ r × s = -30

∵ 6 × -5 = -30

∴ r = 6 , s = -5

∴ hs = 6

∴ rk = -5

∵ hs - rk = 6 - 5 = 1 ⇒ same value of b

∴ (x + 6)(x - 5)

* x² + x - 30 = (x + 6)(x - 5)

b. -3x² + 23x - 14 ⇒ take -1 as a common factor

∴ -(3x² - 23x + 14)

∵ ax² + bx + c

∴ a = 3 , b = -23 , c = 14

∵ c is positive

∴ r and s have same sign (-ve) because b is negative

∵ a = h × k

∵ 3 = 3 × 1

∴ h = 3 , k = 1

∵ c = r × s

∵ 14 = 2 × 7

∴ r = 2 , s = 7

∴ hs = 3 × 7 = 21

∴ rk = 2 × 1 = 2

∵ hs + rk = 21 + 2 = 23 ⇒ same value of b

∴ (3x - 2)(x - 7)

* -3x² + 23x - 14 = -[(3x - 2)(x - 7)]

c. 2x² - 5x + 4

∵ ax² + bx + c

∴ a = 2 , b = -5 , c = 4

∵ c is positive

∴ r and s have same sign (-ve) because b is negative

∵ a = h × k

∵ 2 = 2 × 1

∴ h = 2 , k = 1

∵ c = r × s

∵ 4 = 2 × 2

∴ r = 2 , s = 2

∴ hs = 2 × 2 = 4

∴ rk = 2 × 1 = 2

∵ hs + rk = 4 + 2 = 6 ⇒ not same value of b

∴ We can not factorize it

* 2x² - 5x + 4 can not factorize by this way

d. 6x² + 10x - 24 ⇒ take 2 as a common factor

∴ 2(3x² + 5x - 12)

∵ ax² + bx + c

∴ a = 3 , b = 5 , c = -12

∵ c is negative

∴ r and s have different signs

∵ a = h × k

∵ 3 = 3 × 1

∴ h = 3 , k = 1

∵ c = r × s

∵ -12 = -4 × 3

∴ r = -4 , s = 3

∴ hs = 3 × 3 = 9

∴ rk = -4 × 1 = -4

∵ hs - rk = 9 - 4 = 5 ⇒ same value of b

∴ (3x - 4)(x + 3)

* 6x² + 10x - 24 = 2[(3x - 4)(x + 3)]

Answer:

a. [tex]d=2.0t[/tex]

b. 26 meters

c. picture attached

Step-by-step explanation:

- Since the turtle travels 2.0 meters per minute, it will travel a total distance of [tex]2.0t[/tex] in [tex]t[/tex] minutes. We know that the total distance is [tex]d[/tex], so we can equate both total distances to create our rule:

[tex]d=2.0t[/tex]

- To find the distance of the turtle after 13 minutes we just need to replace [tex]t[/tex] with 13 in our rule:

[tex]d=2.0t[/tex]

[tex]d=2.0(13)[/tex]

[tex]d=26[/tex]

The turtle cover a distance of 26 meters after 13 minutes.

- To graph the function we are going to evaluate our function at two points, and then we are joining those two points with a line (check the attached picture)

We already know that the turtle cover a distance of 26 meters after 13 minutes, since the distance depends on the time our point will have coordinates (time, distance) (13 minutes, 26 meters) (13, 26)

Notice that when time is zero, distance is zero as well, so our second point is (0, 0)

Now we can join the points using a line:

Answer:

option B) f(x)=x^3-6x^2+11x-6

Step-by-step explanation:

Zeros means the point at which a given function becomes zero for the value of input.

In given case, zeros of f(x) is required at points 1,2 and 3.

Graphically the point on x-axis where the function line intersects the x-axis is the zero of the function i.e. the function value is 0,

hence

f(x)=0 when x=1

x-1=0

f(x)=(x-1)

f(x)=0 when x=2

x-2=0

f(x)=(x-2)

f(x)=0 when x=3

x-3=0

f(x)=(x-3)

Thus f(x)=(x-1)(x-2)(x-3)

Writing the above polynomial in standard form:

f(x)=x^3-6x^2+11x-6 !

Answer:

Option A. 30 days

Step-by-step explanation:

Find the area of the brownie pan

The area of the trapezoid is equal to

step 2

To calculate the number of days, divide the total area of the brownie pan by 30 square centimeters of brownie

so

Answer:

The answer is A

Step-by-step explanation:

Answer:

A. Abrupt changes or trends in engine temperature

Step-by-step explanation:

Abrupt changes or trends in engine temperature are an indication that your vehicle may be developing a cooling system problem.

Cooling system problem occurs in engines of vehicles when the vehicle is running low on coolant. This results in an increase in temperature of the engine. If such conditions go un noticed for a long time, fatal accidents can take place.

the answer is A i believe

Answer:

4 copies

Step-by-step explanation:

After yesterday's sales, 1/3 of the original supply remained. After today's sales, 1/5 of that value remain. So the remaining number is ...

60·(1/3)(1/5) = 60/15 = 4

The bookstore has 4 copies of the magazine left after selling 2/3 of them on the first day and 4/5 of the remaining on the second day.

The bookstore originally has 60 copies of a magazine. On the first day, it sold 2/3 of them, which equals to 60*(2/3) = 40 copies. So, there are 60 - 40 = 20 copies left. On the second day, it sold 4/5 of what remained, that is, 20*(4/5) = 16 copies. After this, the remaining copies are 20 - 16 = 4 copies.

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Answer:

x ≈ 4.1 cm

Step-by-step explanation:

The segment from the centre to the chord is a perpendicular bisector

The third side of the triangle = 14.6 ÷ 2 = 7.8

We now have a right triangle with legs x and 7.8 with hypotenuse 8.8

Using Pythagoras' identity on the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

x² + 7.8² = 8.8²

x² + 60.84 = 77.44 ( subtract 60.84 from both sides )

x² = 16.6 ( take the square root of both sides )

x = [tex]\sqrt{16.6}[/tex] ≈ 4.1 ( nearest tenth )

Answer:

4.1

Step-by-step explanation:

⇒The missing side of the triangle is 7.8 cm

We use Pythagoras theorem to solve x

a² = b² + c²

In this case, a = 7.8 cm and c = 8.8 cm

→ 7.8² = x² + 8.8²

( Rearrange )

→ x² = 8.8² - 7.8²

( Simplify )

→ x² = 77.44 - 60.84

( Simplify )

→ x² = 16.6

( Square root )

→ x = 4.074309757

Answer:

[tex]\large\boxed{d)\ x=-5\pm\sqrt{31}}[/tex]

Step-by-step explanation:

[tex]x^2+10x=6\\\\x^2+2(x)(5)=6\qquad\text{add}\ 5^2\ \text{to both sides}\\\\x^2+2(x)(5)+5^2=6+5^2\qquad\text{use}\ (a+b)^2=a^2+2ab+b^2\\\\(x+5)^2=6+25\\\\(x+5)^2=31\iff x+5=\pm\sqrt{31}\qquad\text{subtract 5 from both sides}\\\\x=-5\pm\sqrt{31}[/tex]

Answer:

(x - 4)(x + 1)

Step-by-step explanation:

Given

x² - 3x - 4

To factor the trinomial

Consider the factors of the constant term (- 4) which sum to give the coefficient of the x- term (- 3)

The factors are - 4 and + 1, since

- 4 × 1 = - 4 and - 4 + 1 = - 3, hence

x² - 3x - 4 = (x - 4)(x + 1)

The answer is:

The first option,

[tex]f^{-1}(x)=\frac{x-2}{4}[/tex]

To find the inverse of a function, we need to rewrite the variable "x" with "y" and the variable "y" with "x", and then, isolate "y".

We are given the function:

[tex]f(x)=4x+2[/tex]

Write "f(x)" is equal to write "y", so:

[tex]y=4x+2[/tex]

Now, finding the inverse, we have:

[tex]y=4x+2\\x=4y+2\\x-2=4y\\y=\frac{x-2}{4}[/tex]

Hence, we have that the answer is the first option,

[tex]f^{-1}(x)=\frac{x-2}{4}[/tex]

Have a nice day!

ANSWER

[tex]{f}^{ - 1} (x) = \frac{x - 2}{4} [/tex]

EXPLANATION

The given function is

f(x)=4x+2

To find the inverse, we let

y=4x+2

Then, interchange x and y.

x=4y+2

Solve for y,

x-2=4y.

Divide both sides by 4

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

Hence, the inverse is:

[tex] {f}^{ - 1} (x) = \frac{x - 2}{4} [/tex]

All of the numbers in the shaded part of the line have two characteristics:

==> X >= 0

==>  X <= 20

This can be written as a single inequality with x in the middle, but when I type it, Brainly won't accept the characters, and says there's an error.

Here it is in words:

0 (less than or equal to) x (less than or equal to) 20 .

Answer:

x = - 7, x = 0 and x = 4

Step-by-step explanation:

Factor the polynomial and solve for x

Given

x³ + 3x² - 28x = 0 ← factor out x from each term

x(x² + 3x - 28) = 0 ← factor the quadratic

x(x + 7)(x - 4) = 0

Equate each factor to zero and solve for x

x = 0

x + 7 = 0 ⇒ x = - 7

x - 4 = 0 ⇒ x = 4

These are the 3 points where the graph crosses the x- axis

Answer:

[tex](x-4)^2+(y-3)^2=2^2[/tex]

Step-by-step explanation:

The given circle has equation; [tex]x^2+y^2-8x-6y+24=0[/tex]

Comparing to the general equation of the circle:  [tex]x^2+y^2+2ax+2by+c=0[/tex]

We have [tex]2a=-8\implies a=-4[/tex] and [tex]2b=-6\implies b=-3[/tex]

The center of this circle is (-a,-b)=(4,3).

The required circle has radius r=2 units.

The equation of a circle, given the center (h,k) and radius r, is given by:

[tex](x-h)^2+(y-k)^2=r^2[/tex]

We substitute the values to obtain [tex](x-4)^2+(y-3)^2=2^2[/tex]

Answer:

the answer is C

Step-by-step explanation:

[tex]

3\sqrt{8}\cdot4\sqrt{3} \\

12\sqrt{24} \\

12\cdot2\sqrt{6} \\

\boxed{24\sqrt{6}}

[/tex]

Final answer:

The product of (3 the square root of 8)(4 the square root of 3) is simplified to 24√6, which is the final simplified form as the radical cannot be simplified further.

Explanation:

The product of (3 the square root of 8) and (4 the square root of 3) involves using properties of radicals and multiplication. First, simplify the square root of 8 to 2√2 because 8 is 4 times 2, and 4 is a perfect square whose square root is 2. Now the expression becomes (3∙2√2)∙(4√3). We then multiply the coefficients (3∙2) and (4), which is 24, and the radicals √2 and √3 which is √6. The final product is 24√6, which cannot be simplified further as 6 is not a perfect square.

Answer:

I believe the answer is 120

The value of x in the figure is 120° .

Since MN and NP are tangent to O, then the angle subtended at the center is twice angle m

Now we have :

O = 2 * 60

O = 120°

Therefore, angle O = 120°

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Answer:

Step-by-step explanation:

x+2y=-2

2y = - x -2

y = -1/2 x -1 ... (The first line)   red

y=1/2x-5 ( the second line ) bleus

the solution to the system of equations is (4 ; -3) intersection of two line

Answer:

a negative set of numbers? or integers

Step-by-step explanation:

integers are all the numbers in the world so that includes a negative number

She gets 10000$hope dat helped

Answer:

the answer is $841.53

explanation:

this probably won't help now but it will help others :D

Answer:

The answer to your question is C (27%)

Step-by-step explanation:

I looked up the answer for you but this was proven to be correct.

For this case we have that by definition, the area of a triangle is given by:

[tex]A = \frac {1} {2} b * h[/tex]

Where:

b: It's the base

h: It's the height

Substituting the values, according to the given data:

[tex]225 = \frac {1} {2} (15) * h\\225 = 7.5h[/tex]

Dividing between 7.5 on both sides of the equation:

[tex]h = \frac {225} {7.5}\\h = 30[/tex]

Thus, the height of the triangle is 30ft

Answer:

30ft

Answer: 30 feet.

Step-by-step explanation:

The formula used to calculate the area of a triangle is:

[tex]A=\frac{bh}{2}[/tex]

Where "b" is the base and "h" is the height.

In this case you know that the area of this triangle is 225 ft² and its base is 15 ft. Then, you can substitute these values into the formula [tex]A=\frac{bh}{2}[/tex] and solve for the height "h":

[tex]225ft^2=\frac{(15ft)h}{2}[/tex]

[tex](2)(225ft^2)=(15ft)h[/tex]

[tex]h=\frac{(2)(225ft^2)}{15ft}[/tex]

[tex]h=30ft[/tex]