What is the expected value of the spinner? And is the game fair? Correct answer gets brainiest!

Answer:

Answer=2[tex]x^{2}[/tex]+9x+2

Step-by-step explanation:

to find the perimeter of any shape you add all the lengths of it so,

(-[tex]x^{2}[/tex]+4x)+(3[tex]x^{2}[/tex]+5)+(5x-3)

(you add all same terms together)

=(-[tex]x^{2}[/tex]+3[tex]x^{2}[/tex])+(4x+5x)+(5+(-3))

=2[tex]x^{2}[/tex]+9x+2

Answer:

C is Perpendicular to A

Step-by-step explanation:

Answer:

82

Step-by-step explanation:

59 + 23 = 82

The sum of 59 and 23 is  82

Answer: 4. No, the graph is NOT a function because using the vertical line test, it intersects at two points at a time.

5. Yes, it is a relation, and it is also a function because once those points are plotted if given the vertical line test, there would not be two points crossed at once. So, yes, it is a function.

6. Yes, it is a relation. No, it does NOT make up a function because a vertical line would intersect all the points given.

Answer: 7876

Step-by-step explanation: JUST MULTIPLY THE NUMBERS

Answer:

f, x, 7, -2

Step-by-step explanation:

The sum of the first 50 positive integers is 2550.

The sum of the n positive even integers is given by the formula below:-

S = n ( n + 1 )

n = number of the digits.

The sum of the 50 even positive integers will be calculated as:-

S = n ( n + 1 )

S = 50 ( 50 + 1 )

S = 2550

Therefore, the sum of the first 50 positive integers is 2550.

To know more about the sum of n even numbers follow

https://brainly.com/question/1522182

#SPJ2

Answer:

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Answer:

-2

Step-by-step explanation:

x = -2

Answer:

Step-by-step explanation:

2x+21 =-3 (2x-3)+2x

distributive property

2x+21=-6x+9+2x

combine variables

2x+21=-4x+9

simplify

-2x=12

simplify

x=-6

A affects the slope of the graph.

When a is less than 1, the amplitude of the graph decreases which causes the slope of the graph to appear more flat.

When a is greater than 1, the amplitude of the graph increases which causes the slope of the graph to appear more steep.

Answer:

75 cm

Step-by-step explanation:

Given:

Perimeter of the triangular yield sign = 225 cm

Side lengths = x, x and x

Required:

Length of each side

SOLUTION:

Perimeter of the triangular yield sign = sum of all sides of the triangular yield sign

225 cm = x + x + x

Solve for x

225 = 3x

Divide both sides by 3

225/3 = 3x/3

75 = x

x = 75

The length big each side is 75 cm

Answer:

35

Step-by-step explanation:

Simply subtract 31 from 66 to receive the value of x

Answer:

X = 35

Step-by-step explanation:

Take 31 over to the other side so the equation looks like this

[tex]x = 66 - 31[/tex]

Then, solve for 66 - 31.

You will end up with x = 35.

You can also check your work by substituting X with 35.  

Hopefully this helped :)

Answer:

11 out of 39

Step-by-step explanation:

Answer:

\frac{11}{39}

39

11

Step-by-step explanation:

There are 39 fruits in all.

11 + 6 + 9 + 13= 3911+6+9+13=39

Therefore, there would be 39 total events.

There are 11 preferred events, as there are eleven oranges out of the 39 fruits.

\frac{preferred}{total} =\frac{11}{39}

total

preferred

=

39

11

So, there should be a 11/39 chance that a person would pick an orange.

\frac{11}{39}

39

11

is already in it's lowest terms

Answer:

b

Step-by-step explanation:

hope this helps you get a good grade on the quiz ect

Answer:

180

Step-by-step explanation:

Answer:

The 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2 is (-8.04, 0.84).

Step-by-step explanation:

The (1 - α)% confidence interval for the difference between population means is:

[tex]CI=(\bar x_{1}-\bar x_{2})\pm z_{\alpha/2}\times \sqrt{\frac{\sigma^{2}_{1}}{n_{1}}+\frac{\sigma^{2}_{2}}{n_{2}}}[/tex]

The information provided is as follows:

[tex]n_{1}= 138\\n_{2}=156\\\bar x_{1}=61\\\bar x_{2}=64.6\\\sigma_{1}=18.53\\\sigma_{2}=13.43[/tex]

The critical value of z for 98% confidence level is,

[tex]z_{\alpha/2}=z_{0.02/2}=2.326[/tex]

Compute the 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2 as follows:

[tex]CI=(\bar x_{1}-\bar x_{2})\pm z_{\alpha/2}\times \sqrt{\frac{\sigma^{2}_{1}}{n_{1}}+\frac{\sigma^{2}_{2}}{n_{2}}}[/tex]

     [tex]=(61-64.6)\pm 2.326\times\sqrt{\frac{(18.53)^{2}}{138}+\frac{(13.43)^{2}}{156}}\\\\=-3.6\pm 4.4404\\\\=(-8.0404, 0.8404)\\\\\approx (-8.04, 0.84)[/tex]

Thus, the 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2 is (-8.04, 0.84).

Answer:

a = 5

General Formulas and Concepts:

Order of Operations: BPEMDAS

Properties: Distributive, etc.

Step-by-step explanation:

Step 1: Write equation

3(a + 3) + 6 = 30

Step 2: Solve for a

Step 3: Check

Plug in a to verify it's a solution.

Answer:

★ Divisibility rule for 3 -

If the sum of all the digits divisible by 3 then the number is divisible by 3.

Here, we take an example for better understanding -

Example 1 - 3525

Add up the digits - 3 + 5 + 2 + 5

→ 15

As, 15 is divisible by 3. So, 3525 is a factor of 3.

★ Divisibility rule for 6 -

A number is to be divisible by 6 , if the number is also divisible by 2 and 3.

Example 2 - 132

Add up the digits = 1 + 3 + 2 = 6

As, 6 is divisible by 2 and it's also divisible by 3. Then, 132 is a factor of 6.

★ Divisibility rule for 9 -

If the sum of all the digits is divisible by 9 then the number is divisible by 9. Just like we'd in 3.

Example 3 - 1052

Add up the digits - 10 + 5 + 2 = 17

As, 17 is not divisible by 9. So, 1052 is also not divisible by 9.

Answer:

f(x) = x² - 5x - 24

Step-by-step explanation:

Step 1: Define

Roots/zeros = 8, -3

Step 2: Rewrite

x = 8, -3

Step 3: Write quadratic function

Answer:

f(x) = x^2 - 5x - 24.

Step-by-step explanation:

In factor form that would be:

f(x) = (x - 8)(x + 3)

f(x) = x(x + 3) - 8(x + 3)

= x^2 + 3x - 8x - 24

f(x) = x^2 - 5x - 24.

Answer:

11.811 inches

Step-by-step explanation:

every inch is 2.54 centimeters

Answer:

11.811 inches

Step-by-step explanation:

divide the length value by 2.54

Answer:

Every step is wrong in the proof theorem

Step-by-step explanation:

The inductive step :  whenever max(x, y) = k and x and y are positive integers, then x = y. is wrong because

If max (x,y ) = k + 1 then max ( x-1, y-1 ) = k

and by inductive hypothesis : x-1 = y-1 and x =y

example :

max ( 2, 3 ) = 3 where x = 2 , y =3

and x ≠ y hence the inductive step is wrong

Answer:

it could be c: x=11

Step-by-step explanation:

you move the constant (-4) to the right side along with the seven and combine them which gives you eleven

Answer:

The answer is 9.

Step-by-step explanation:

I had the question on one of my quizzes.

Answer:

9 and 5

Step-by-step explanation:

There are many answers

Answer:

There could be a different answer but this is what i got.

Step-by-step explanation:

1 x 45,

3 x 15,

or 5 x 9

Answer:

11 hot dogs

Step-by-step explanation:

divide 6237 by 567

Answer:

11 hot dogs

Step-by-step explanation:

567/6237=11

Answer:

Step-by-step explanation:

x=

2

4−

24

​

​

=2−

6

​

=−0.449

x=

2

4+

24

​

​

=2+

6

​

=4.449

Answer:

7/60

Step-by-step explanation:

multiply 7/12 by 5 (5 people in total) which equals 35/60 which you then divide the 35 by the 5 people