Karina plays a video game that is scored by round. In about 500 rounds, her career average is 20 points per
round with a standard deviation of 5 points per round. Suppose we take random samples of 3 past rounds and
calculate the mean number of points that she scored in each sample.
Calculate the mean and standard deviation of the sampling distribution of T.
You may round to one decimal place.

Answer:

Following are the solution to the given question:

Step-by-step explanation:

Please find the attached file for the solution:

20% of flights accounted for nearly 70 to 80% of delayed minutes.

Answer:

80in3

Step-by-step explanation:

12 x 4 = 48

48 / 2 = 24

24 x 10 =240

240 / 3 = 80

           So your answer is 80in3

Answer: 80in

Step-by-step explanation:

Answer:

(8,23)

Step-by-step explanation:

x+y=31

4.5x + 11y = 289

x = 31 -y

4.5(31 - y) + 11y = 289

139.5 - 4.5y + 11y = 289

6.5y = 149.5

y = 23

x = 31 - 23 = 8

The ordered pair, (x, y) = (8, 23).

An ordered pair exists as a composition of the x coordinate (abscissa) and the y coordinate (ordinate), containing two values noted in a fixed order within parentheses.

Given: A taxi driver had 31 fares to and from the airport last Monday. The price for a ride to the airport exists $4.50, and the price for a ride from the airport exists $11. The driver collected a total of $289 for the day.

x + y = 31........(1)

4.5x + 11y = 289 ........(2)

From (1), we get

x + y = 31

x = 31 - y

Substitute the value of x in (2), and we get

4.5x + 11y = 289

4.5(31 - y) + 11y = 289

Simplifying the above equation, we get

139.5 - 4.5y + 11y = 289

6.5y = 149.5

y = 23

substitute the value of y, in (1) then we get

x = 31 - y

x = 31 - 23 = 8

The value of x = 8 and y = 23.

Therefore, the ordered pair, (x, y) = (8, 23).

Complete question

A taxi driver had 31 fares to and from the airport last Monday. The price for a ride to the airport is $4.50, and the price for a ride from the airport is $11. The driver collected a total of $289 for the day. Let 2 represent the number of trips to the airport and y represent the number of trips from the airport. Write the ordered pair, (x, y) that represents the situation.

Answer:

Divide previous term by 2

Step-by-step explanation:

Have a nice day :)

Answer:

every number is getting half one by one

Step-by-step explanation:

means getting divided by 2

have a cheerful day

Answer:

64 degrees

Step-by-step explanation:

All angles in a triangle plus each other equals 180. First find the missing angle of the triangle with 2 given angles. The missing angle is 64 degrees because 68 plus 48 is 116 and 180 - 116 is 64. Vertical angles are always congruent and the missing angle is vertical to the missing angle on the first triangle.

Answer:

4

Step-by-step explanation:

this means that 5x+7=27

subtract 7 from both sides

5x=20

x=4

Answer:

The answer is 10 inches, because first we multiply the letters and how wide they are then subtract that from 60 then divide that by our spaces (4)

Step-by-step explanation:

Answer:

5x²

-1/2( x+8)

Step-by-step explanation:

The dominant term is 2x^2 *x or 2x^3

We want to know what happens when x goes to negative ∞

2 ( -∞) ^3 → 2 * (-∞) → -∞

As long as we multiply by a positive number, we will still be approaching negative infinity ( or decreasing)

-3  is negative

.2x is negative when x approaches negative infinity

.5 x^2 = .5( -∞)^2 = 5 ( ∞) = ∞ which is positive

-1/2 x is the dominant term  = -1/2(- ∞) =   ∞ which is positive

4(2x) is the dominant term  = 8(- ∞) = - ∞ which is negative

Answer:

3rd and 4th Choices.

[tex]\displaystyle 5x^2\text{ and } -\frac{1}{2}(x+8)[/tex]

Step-by-step explanation:

We are given the function:

[tex]f(x)=(2x^2+5)(x-7)[/tex]

And we want to determine the factor(s) that we can multiply to the above function that will cause the graph of f to decrease as x approaches negative infinity.

We can see that the dominant term will be:

[tex]2x^2(x)=2x^3[/tex]

Thus:

[tex]2(-\infty)^3\Rightarrow -\infty[/tex]

It is already decreasing (shifting towards negative infinity) as x approaches negative infinity.

In order to preserve this, then, the factors must be positive as x approaches negative infinity.

The first factor is -3.

-3 is always negative, so it will make f increase.

The second factor is [tex]0.2x[/tex].

[tex]0.2(-\infty)\Rightarrow -\infty[/tex]

This will also make f increase.

The third factor is:

[tex]5(\infty)^2\Rightarrow \infty[/tex]

This is positive, so it will allow f to remain decreasing as x approaches negative infinity.

The fourth factor is:

[tex]\displaystyle -\frac{1}{2}(-\infty+8)\Rightarrow -\frac{1}{2}(-\infty)\Rightarrow \infty[/tex]

This is also positive, so it will also allow f to remain decreasing.

Lastly, the fifth factor is:

[tex]4(2(-\infty)-7)\Rightarrow 4(-\infty)\Rightarrow -\infty[/tex]

This is negative, so it will make f increasing.

Therefore, our answers are the third and fourth choices.  

Answer:

I believe there is a 5/10 chance

Step-by-step explanation:

Answer:

5/9 chance

Step-by-step explanation:

There are 4 even numbered balls from 0-9. Meaning there is a 4 out of 9 chance to get a even ball, but there is also a five. So the answer  is 5 out of 9.

Please give brainliest :)

Answer:

1.32 that should be correct

Answer:

1.32

Step-by-step explanation:

you would write it out like this on paper

1.1

1.2

_______

  22

+ 110

_______

132. ---> 1.32 because you move it two decimal points to the left because of the decimal points in 1.1 & 1.2.

Answer:

20 (3+s)

and the answer to the expression is

20 (3+s)

=60+20s

80

Answer:

3x-14=31 ,= 15

Step-by-step explanation:

3x= 45

x= 45/3

x= 15

hope it helps

Answer:

WOAH Sapnap!

Step-by-step explanation:

Answer:

In Odette's solution, 7 is the number of

nickels and 8 is the number of dimes

Answer:

A: (-4,1) QUAD 2

B: (-1, -3) QUAD 3

C: (2,5) QUAD 1

D: (5, -4) QUAD 4

Step-by-step explanation:

Answer:

False, because the left side (-169), is not equal to the right side (95).

9514 1404 393

Answer:

  15

Step-by-step explanation:

In vector form, the equation of point p on the line can be written as ...

  p = (-3, -4) +t(25 -(-3), 38 -(-4)) . . . . . for some scalar t

  p = (-3, -4) +t(28, 42)

  p = (-3, -4) +14t(2, 3)

where t takes on any value between 0 and 1.

If we let t = n/14 for some integer 0 ≤ n ≤ 14, then the coordinates of point p will be integers.

There are 15 values that n can have in the allowed range.

The caterpillar touches 15 points with integer coordinates.

Answer:

2 weeks

Step-by-step explanation:

y = mx + b

y = total number of chapters read = [tex]9\frac{2}{3}[/tex]

m = number of chapters read per week = [tex]4\frac{5}{6}[/tex]

x = number of weeks = what we're solving for

b is not needed to find this solution

[tex]9\frac{2}{3}[/tex] = [tex]4\frac{5}{6}[/tex] x                            divide [tex]4\frac{5}{6}[/tex] from both sides

x = 2 weeks

Answer:

41,  -7,  18

Step-by-step explanation:

Let a = smallest number

b = second number

c = largest number

Then  a + b +c = 52       c - a = 48        a + b = 11

11 + c = 52

c = 41       41 - a = 48

                      -a = 6

                       a = -7                         -7 + b = 11

                                                                b = 18

Answer:

a=-7

b=18

c=41

Step-by-step explanation:

a+b+c=52

c-a=48

a+b=11

11+48=59

a+59=52

a=-7

Answer:

-5 + 9 + (-3/5) + 1/5

Step-by-step explanation:

Answer:

2√5

Step-by-step explanation:

By applying Pythagoras (hypotenuse)^2=(Base)^2 +(Height)^2

The length of the ramp is approximately 4.47 feet.

Pythagoras's theorem states that in a right-angled triangle, the square of one side is equal to the sum of the squares of the other two sides.

If the base of the ramp is 4 feet and the vertical height is 2 feet, we can use the Pythagorean theorem to find the length of the ramp:

ramp length² = base² + height²

ramp length² = 4² + 2²

ramp length² = 16 + 4

ramp length² = 20

Taking the square root of both sides, we get:

ramp length = √20

Simplifying the square root of 20, we get:

ramp length ≈ 4.47 feet

Therefore, the length of the ramp is approximately 4.47 feet.

Learn more about Pythagoras's theorem here:

brainly.com/question/343682

#SPJ3

8/15

Hope this helps!

Answer:

[tex]\frac{8}{15}[/tex]

Step-by-step explanation:

[tex]Tan(k)=\frac{24}{45} =\frac{8}{15}[/tex]

Step-by-step explanation:

mark me as a brainlist hope its helpful yo you

The function is increasing from (–∞, 0). Then the correct option is A.

If the value of y increases as the value of x increases, then increasing function.

And if the value of y decreases as the value of x increases, then decreasing function.

From the graph, the function is increasing from (–∞, 0).

Then the correct option is A.

The complete question is attached below.

More about the increasing and decreasing of function link is given below.

https://brainly.com/question/14330051

#SPJ2

Answer:

1 : 4

Step-by-step explanation:

5(a - b) = 3(a + b) = 5a - 5b = 3a + 3b

2a - 5b = 3b

2a = 8b

2/8 is 1/4 simplified

9514 1404 393

Answer:

  5 mph, 11 mph

Step-by-step explanation:

Together, they cover 24 miles in 1.5 hours, so their total rate of speed is ...

  (24 mi)/(1.5 h) = 16 mi/h

If s is the rate of the slower jogger, then s+6 is the rate of the faster one. Their total speed is ...

  s + (s+6) = 16

  2s = 10 . . . . . . . subtract 6

  s = 5 . . . . . . . . . divide by 2

  s+6 = 11

The rates of the joggers are 5 mph and 11 mph.

Answer:

Try reading it over

Step-by-step explanation:

Answer:

?

Step-by-step explanation:

Answer:

1920 cm³

Step-by-step explanation:

For the left figure:

10 • 8 • 14 =

80 • 14 = 1120

For the right figure:

10 • 10 • 8 =

100 • 8 = 800

Add together : 1120 + 800 = 1920 cm³