a CD player regularly sells for $80. It is on sale for 20% off. What is the sale price of the CD player?

Answer:

f(x) can be odd or even.

Step-by-step explanation:

The following information is missing in the question:

Suppose f(x) is a function such that if p < q, f(p) < f(q). Which statement best describes f(x)?

With the information given it is not possible to determine if the function is even or odd.

Even functions: f(-x) = f(x). For examle, (-2)² = 2², then x² is even

Odd functions: f(-x) = -f(x). For examle, (-2)³ = -(2³), then x³ is odd

In both cases, x² and x³, if p < q, f(p) < f(q). For example, 1² < 2², and 1³ < 2³

Answer:

C) A quadrilateral with four congruent sides and four right angles is a square.

The  P ↔ Q represents A quadrilateral with four congruent sides and four right angles is a square.

A closed quadrilateral has four sides, four vertices, and four angles. It is a form of polygon. In order to create it, four non-collinear points are joined. Quadrilaterals always have a total internal angle of 360 degrees.

Given:

If a quadrilateral has four congruent angles, then it's a rectangle.

the statement cannot be true because the same property also carried by Square.

If a quadrilateral has four congruent sides, then it's either a square or a rhombus but reverse is not possible.

A quadrilateral with four congruent sides and four right angles is a square.

The statement is perfectly true because the reverse is also possible.

Learn more about Quadrilateral here:

https://brainly.com/question/13805601

#SPJ2

Answer:

D. 1

Step-by-step explanation:

Answer:

the exponential function is g(x)

Step-by-step explanation:

because quadratic function is f(x)

Answer:

5n-10 < 6n-8

n - is the variable that's stands for the unspecified number

step 1. ten is less than 5 times a number

step 2. LESS THAN SIGN :)

step 3. six times the number decreased by 8

......................

oh and if you're looking to simplify that problem I believe it would be worked out like this....5n-10<6n-8....subtract 5 from both sides....-10

Answer:

6x^2 + 2x - 5 (Option C)

Step-by-step explanation:

1. First, add 4x^2 and 2x^2 together (which is 6x^2). You can figure this out by adding 4 and 2.

2. Second, add -5x and 7x (which is 2x)

3. Lastly, subtract 3 and 8, which is -5

WHY DOES THE ANSWER HAVE A NEGATIVE 5?

The equation looks like this: +3 + -8

You are adding 3 to -8, which is the same as subtracting positive 3 and positive 8 (positive times a negative is a negative or a minus sign)

Answer:

C. 6x^2 + 2x - 5

Step-by-step explanation:

4x^2 + 2x^2 = 6x^2

-5x + 7x = 2x

3 - 8 = -5

Therefore,

4x^2-5x+3 + 2x^2+7x-8 = 6x^2+2x-5

Answer:

EVERYONE IT IS 3/4 lol

Step-by-step explanation:

The difference of the expression (-3 + 1/2) - (-4 + 1/4) is 3/4.

Additive inverse in simple terms is meant to add a number with it's opposite sign to get the result as zero.

Mathematically for any number 'a', a + (-a) = 0 implies that -a is the additive inverse of 'a'.

The given expression is, (-3 + 1/2) - (-4 + 1/4).

(-3 + 1/2) - (-4 + 1/4) = [(-3 × 2 + 1) / 2] - [(-4 × 4 + 1) / 4]

                               = (-7/2) - (-17/4)

The additive inverse of (-7/2) is (+7/2).

Adding and subtracting the additive inverse (+7/2),

(-3 + 1/2) - (-4 + 1/4) = (-7/2) - (-17/4) + (7/2) - (7/2)

                               =  (-7/2) + (17/4) + (7/2) - (7/2)

                               = [(-7/2) - (7/2)] + [(17/4) + (7/2)]

                               = (-14/2) + (31/4)

                               = (-28/4) + (31/4)

                               = 3/4

Hence the difference of the expression given is 3/4.

To learn more about Subtraction, click on the link :

https://brainly.com/question/1927340

#SPJ3

Answer:

B. line graph

Step-by-step explanation:

Answer:

it is B.line graph

Step-by-step explanation:

you would use this line graph to answer the questions

line graphs are the best solutions for this question

Answer:

B)[tex]-0.70x^2+2.37x+11.96[/tex]

Step-by-step explanation:

No. of second                       Height

0                                               12

1                                               13

2                                               15

3                                               13

4                                               9

5                                               7

Quadratic Regression Equation:  [tex]y = a + b x + c x^2[/tex]

[tex]c = \frac{ [ \sum x^2 y * \sum xx ] - [\sum xy \cdot \sum xx^2 ] } { [ \sum xx \cdot \sum x^2 x^2] - [\sum xx^2 ]^2 }[/tex]

[tex]b =\frac{ [ \sum xy \cdot \sum x^2 x^2 ] - [\sum x^2y \cdot \sum xx^2 ] } { [ \sum xx \cdot \sum x^2 x^2] - [\sum xx^2 ]^2 }[/tex]

[tex]a = [ \sum y / n ] - { b \cdot [ \sum x / n ] } - { a \cdot [ \sum x^2 / n ] }[/tex]

Where ,

[tex]\sum x x = [ \sum x^2 ] - [ ( \sum x )^2 / n ]\\\\\sum x y = [ \sum x y ] - [ ( \sum x \cdot \sum y ) / n ]\\\\\sum x x^2 = [ \sum x^3 ] - [ ( \sum x^ 2 \cdot \sum x ) / n ]\\\\\sum x^2 y = [ \sum x^2 y] - [ ( \sum x^2 \cdot \sum y ) / n ]\\\\\sum x^2 x^2 = [ \sum x^4 ] - [ ( \sum x^2 )^2 / n ][/tex]

Using these formulas the required equation is :[tex]-0.696 X^2 +2.368 X +11.964[/tex]

So, option B is true

B)[tex]-0.70x^2+2.37x+11.96[/tex]

Answer4:

Step-by-step explanation:

X;1

A. semi

Step-by-step explanation:

I hope this helps you

Answer:

x=5.4

Step-by-step explanation:

12x-72=2x-18   distribute

-2x     =-2x        subtract

10x-72= -18

     +72=+72    add

10x=54   divide

x=5.4      simplify

Answer:

Step-by-step explanation:

12(x−6)=2(x−9)

(12)(x)+(12)(−6)=(2)(x)+(2)(−9)(Distribute)

12x+−72=2x+−18

12x−72=2x−18

Step 2: Subtract 2x from both sides.

12x−72−2x=2x−18−2x

10x−72=−18

Step 3: Add 72 to both sides.

10x−72+72=−18+72

10x=54

Step 4: Divide both sides by 10.

10x

10

=

54

10

x=

27

5

Answer:

x=

27

5

Answer:C, D, And F

Step-by-step explanation:

Answer:

(8,0)   ( -8,0) are the x intercepts

Step-by-step explanation:

Factor

x^2 - 64

This is the difference of squares

(x-8) (x+8)

Set equal to zero to find the intercepts

x-8 = 0    x+8 =0

x= 8  x= -8

Answer: (8,0) and (-8,0)

Step-by-step explanation: It is one positive and one negative 8 because a double positive would be a +64 and a double negative would also be a +64(unless there was another x for example x^2+2x-64.

x^2-64

(x+8) (x-8)

(x+8) (x-8)=0

x+8=0 and x-8=0

(-8,0) and (8,0)

Answer:

ΔPQR ~ ΔTSR

Step-by-step explanation:

The value of angle y is equal to 60°

Alternate interior angles are the angles formed when a transversal intersects two coplanar lines. They lie on the inner side of the parallel lines but on the opposite sides of the transversal.

The Alternate Interior Angles Theorem states that, when two parallel lines are cut by a transversal , the resulting alternate interior angles are congruent .

According to the question

AB is parallel to CD

and the line intersect AB and CD is transversal line

Therefore ,

∠y , 60° are Alternate Interior Angles  .

Now ,

According to the Alternate Interior Angles Theorem

When two parallel lines are cut by a transversal , the resulting alternate interior angles are congruent .  

Therefore,  

y = 60°

Hence. The value of angle y is equal to 60°  .

To know more about Alternate Interior Angles Theorem here:

https://brainly.com/question/18304277

#SPJ2

Answer: CE= 8

Step-by-step explanation:

Answer:

I think it A, B, D but I'm not certain

Answer:

The correct answer is A B and C

Step-by-step explanation:

A is going the correct way through the arrows and not in random order like D. B is also going in the correct way and same with C.

Answer:

2/3,2/6,2/8

Step-by-step explanation:

Answer:

True

Step-by-step explanation:

If you look at line G it is clearly extending off of plane M while line f doesn't seem to be extending off of plane R.

Answer:

The median is 10

Step-by-step explanation:

(x + x + 2x-1 + 3x+2 + 6x + 8x-1)/6 = 7

(x + x + 2x-1 + 3x+2 + 6x + 8x-1) = 42

21x = 42

x = 2

3(2)+2 = 8

6(2) = 12

(8+12) / 2 = 10

Answer:

19.92

Step-by-step explanation:

To find the length of AC we need to use the Pythagorean theorem: a^2 + b^2 = c^2

a = 6 b = 19

a^2 = 36

b^2 = 361

36 + 361 = 397

c^2 = 397

to find c we take the square root of 397

[tex]\sqrt{397} = 19.9248588452[/tex]

take the first 2 decimals for the answer

Answer:

560

Step-by-step explanation:

Answer:

Slope = -3/4

y-intercept = 2

Step-by-step explanation:

[tex]3x+4y = 8\\\therefore 4y = -3x +8\\\therefore y = \frac{-3}{4}x+ \frac{8}{4}\\\therefore y = \frac{-3}{4}x+2\\Equating \: it \: with\: \\y=mx+b\\Slope\:(m) = \frac{-3}{4}\\y-intercept\:(b) = 2[/tex]

Answer:

y=3

Step-by-step explanation:

3y=9

Divide each side by 3

3y/3 = 9/3

y = 3

Answer:

3

Step-by-step explanation:

3y=9

take the 3 and divide it by 9 and you will get 3

And  y=3

I hope this is right

Answer:

5t² - 16t + h =0

Step-by-step explanation:

During upward projection the final velocity is zero, and the gravitational acceleration is -10 m/s² (against the gravity).

Therefore; using the equation;

S = 1/2gt² + ut

Where s is the height h, g is gravitational acceleration, and t is the time and u is the initial velocity u, is 16 ft/s.

Thus; h= 1/2(-10)t² + 16t

We get; h = -5t² + 16t

Therefore; the quadratic equation is 5t² - 16t + h =0

Plz, mark me brainlest!!

Answer:

D.441

Step-by-step explanation:

All sides of a square are equal. Due to this, the perimeter can be expressed as 4 times the side of the square. Let x be the side of a square.

Then we have:

4x = 84

x = 21

The area of a square is written as x^2, as x is both the length and the width.

So your answer will be:

(21)^2 = 441

The area of the garden is  441 sq ft

A square is a quadrilateral with four equal sides.

Characteristics of a square includes:

• The diagonals bisect each other at 90°.

• Opposite sides parallel and of equal length

• The four angles of a square are equal.

Perimeter of a square =4 x length

84 = 4 x length

divide both sides of the equation by 4

84/4 = length

length = 21 feet

Area of a square = length²

21² =  441 sq ft

For more information on how to determine the area of a square, check : https://brainly.com/question/13227863?referrer=searchResults

Answer:

The answer is -3x² + 12x.

Step-by-step explanation:

You have to apply Distributive Law,

[tex]a(m + n) = am + an[/tex]

So for this question :

[tex] - 3x(x - 4)[/tex]

[tex] = - 3x(x) - 3x( - 4)[/tex]

[tex] = - 3 {x}^{2} + 12x[/tex]

Answer:

[tex] = - 3 {x}^{2} + 12x \\ [/tex]

Step-by-step explanation:

[tex] - 3x(x - 4) \\ - 3x(x) - 3x ( - 4) \\ = - 3 {x}^{2} + 12x[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!