PLZ HELP if u know the amswer​

here hope this helps!

Step-by-step explanation:

Answer:

C. [tex] 2x^3 + 8x^2 - 28x + 8 [/tex]

Step-by-step explanation:

Product of [tex] 2x - 4 [/tex] and [tex] x^2 + 6x - 2 [/tex]

[tex] (2x - 4)(x^2 + 6x - 2) [/tex]

[tex] 2x(x^2 + 6x - 2) -4(x^2 + 6x - 2) [/tex] (distributive property)

[tex] 2x^3 + 12x^2 - 4x -4x^2 - 24x + 8 [/tex]

Collect like terms

[tex] 2x^3 + 12x^2 - 4x^2 - 4x - 24x + 8 [/tex]

[tex] 2x^3 + 8x^2 - 28x + 8 [/tex]

Answer:

x=18

Step-by-step explanation:

To solve for x you need to times both sides by 3/2 so then 12*3/2=12*1.5=18.

(can I get brainliest please)

Answer:

X = 18

Step-by-step explanation:

(2/3)X = 12

X = 12/(2/3)

X = 36/2

X = 18

Answer:

The blue box

Step-by-step explanation:

Youre talking about range which takes place on the y-axis (domain is the x-axis).

The top point is an open circle which indicates in the math world the parentheses and the bottom point 1 in a bracket as its a closed circle.

Answer:

[tex]\frac{612}{999}[/tex]

Step-by-step explanation:

To convert repeating decimals to fractions, you take the numbers that are repeating, in this case 612, and you see how many numbers are repeating. Here we have 3 numbers repeating and so you would divide 612 by 3 9's meaning 999. So 0.612 repeating is equal to [tex]\frac{612}{999}[/tex]. To make sure the answer is right, you can divide the numbers in a calculator to make sure you get the correct decimal.

Answer:

108

Step-by-step explanation:

Answer:

108 cubes

Step-by-step explanation:

9 times 12 equals 108

9 • 12 = 108 cubes

Answer:

880 rotations or D

Step-by-step explanation:

72 inches = 72 / 12 = 6 feet

1 mile = 5280 feet

1 rotation covers 6 feet

x rotations covers 5280 feet

1/x = 6/5280                       Cross multiply

6x = 5280 * 1                      Divide by 6

x = 5280 /6

x = 880

D

Answer:12

Step-by-step explanation:

;)88):4?8’kifssvjimdargyjkk

Answer:

Step-by-step explanation:

Vertex

Answer:

4:18 6:27 8:36

Step-by-step explanation:

Answer:

Spiced eye gonna flush my toilet now ;)

Answer:

hes right

Step-by-step explanation:

Answer:

y=54

Step-by-step explanation:

Answer:

Set 1) A and B are proportional because it is in the form of y = kx

Set 2) B is proportional because it is a straight line passing through the origin

Set 3) B and C because it uses the equation y = kx

Answer:

60mph

Step-by-step explanation:

330 divided by 5.5 is 60

Answer:

t = infinite amount of solutions

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Step-by-step explanation:

Step 1: Define Equation

2t + 5 = 2t + 5

Step 2: Solve for t

Here we see that t does indeed equal t.

∴ t = infinite amount of solutions

Answer:

29/4

Step-by-step explanation:

4x=29

x=29/4

The value of x and the solution of the equation is 7.25.

An equation is a statement that is formed when two algebraic expressions are equated by an equal sign.

The solution of 4x+5 = 34 is

4x = 34-5

4x = 29

x = 29/4

x = 7.25

The value of x and the solution of the equation is 7.25.

To know more about Equation

https://brainly.com/question/10413253

#SPJ2

Answer:

is not; 4t

Step-by-step explanation:

Because when you switch the signs for substraction like 2-3 you will get -1, but if you do 3-2, then youll get 1. The Same goes for this question. If you plug in 2 for t, like 13(2)-4(2), it will be 26-8, which is 18. But if you do the same for the other equation, 4(2)-13(2), you will get 8-26, which equals -18. So -18 does not equal 18 because one postive and the other is negative.

Answer:

is not; -4t

Step-by-step explanation:

It's not the same because the negative sign always belongs to the number in front of it.

Answer:

20%

Step-by-step explanation:

cuz quick meths

Answer:

a

[tex]\= x = 40.85[/tex]

b

[tex]E = 5.85[/tex]

Ca  

   [tex]t_c =  2.08 [/tex]

Cb

   [tex] t_c  =   1.282 [/tex]

Explanation:

From the question we are told that

     The sample size is n  =  100

     The upper limit of the 95% confidence interval is  b =  47.2 years

     The lower limit of the 95% confidence interval is   a =  34.5 years

Generally the sample mean is mathematically represented as

         [tex]\= x = \frac{a + b }{2}[/tex]

=>    [tex]\= x = \frac{47.2 + 34.5 }{2}[/tex]

=>    [tex]\= x = 40.85[/tex]

Generally the margin of error is mathematically represented as

         [tex]E = \frac{b- a }{ 2}[/tex]

=>      [tex]E = \frac{47.2- 34.5 }{ 2}[/tex]

=>      [tex]E = 5.85[/tex]

Considering question C a  

From the question we are told the confidence level is  90% , hence the level of significance is    

      [tex]\alpha = (100 - 90 ) \%[/tex]

=>   [tex]\alpha = 0.10[/tex]

The  sample size is  n =  22

Given that the sample size is not sufficient enough i.e [tex]n < 30[/tex] we will make use of the student t distribution table  

Generally the degree of freedom is mathematically represented as

           [tex]df = n- 1[/tex]

=>        [tex]df = 22 - 1[/tex]

=>        [tex]df = 21[/tex]

Generally from the student  t  distribution table the critical value  of  [tex]\frac{\alpha }{2}[/tex] at a degree of freedom  of  21 is  

   [tex]t_c =t_{\frac{\alpha }{2} ,  21  } =  2.08 [/tex]

Considering question C b

From the question we are told the confidence level is  80% , hence the level of significance is    

      [tex]\alpha = (100 - 80 ) \%[/tex]

=>   [tex]\alpha = 0.20[/tex]

Generally from the normal distribution table the critical value  of  [tex]\frac{\alpha }{2}[/tex] is  

   [tex] t_c  =Z_{\frac{\alpha }{2} } =  1.282 [/tex]

Answer:

B

Step-by-step explanation:

The equivalent expression shows the length and the width of the path is (x-10)(x-8).

An algebraic equation of the second degree in x is a quadratic equation. The quadratic equation is written as ax² + bx + c = 0, where x is the variable, a and b are the coefficients, and c is the constant term. First, there must be a term other than zero in the coefficient of x² (a≠ 0) for an equation to be a quadratic equation. The x²term is written first when constructing a quadratic equation in standard form, then the x term, and finally the constant term. The numerical values of a, b, and c are typically expressed as integral values rather than fractions or decimals.

Given:

A = x² - 18x +80.

Now, factorizing

x² - 10x - 8x + 80

=x(x-10) - 8(x-10)

=(x-8)(x-10)

Hence, equivalent expression shows the length and the width of the path is (x-10)(x-8).

Learn more about quadratic equation here:

https://brainly.com/question/17177510

#SPJ6

Answer:

13.5cm square

Step-by-step explanation:

A=l×w = 1.5×1.5=2.25cm square

SA=2.25×6=13.5cm square

The surface area of the cube is 49.5 cm². Thus, option C is correct.

A cube is a three-dimensional solid object having six square faces, facets, or sides, three of which meet at each vertex. It is a hexagon when viewed from a corner, and its net is commonly portrayed as a cross. The cube is one of the five Platonic solids and the only regular hexahedron.

The surface area of a solid item is a measurement of the entire area occupied by the object's surface.

The surface area formula is six times the square of the length of the cube's sides. It is represented as 6a2, where is the cube's side length. It is, in essence, the whole surface area.

Area of Cube    = side*side

                          = 1.5x1.5

                           =2.25cm²

A total of 22 surfaces are exposed. So, the surface area of the cube is,

=22* 2.25

= 49.5 cm²

Therefore, option C is correct.

Learn more about surface area here:

https://brainly.com/question/29298005

#SPJ2

Complete question is mentioned in the image below.

Answer:

10

Step-by-step explanation:

hope this helps ")

Answer:

(0,8)

Step-by-step explanation:

270 counterclockwise is the same as 90 clockwise, the formula for 90 clockwise is (y, -x) so plug in the variables and you get (0,8)

Answer: Where is the question?

Step-by-step explanation:

Answer:

No

Step-by-step explanation:

42x+588

Answer:

238 B

Step-by-step explanation:

8.5*28