The mean of this data set is 9. What number is missing?

11,20,_,3,1

Answers

Answer 1
Let the missing number be x

Mean is the total sum of data over the number of data therefore,

(11+20+x+3+1) / 5 = 9
Then simplify
(35 + x) / 5 = 9
Then multiply 5 to both sides
35 + x = 45
Then subtract 35 to both sides to find x
X= 10

Hope this helps!

Answer 2

10 is the mean of the number that is missing.

What is mean?

A property of an assortment of data that represents an average is called the mean. Depending on the nature of the information as well as the kind of average you require, one can compute the mean theoretically employing any of the several ways. Scheming the data distribution constantly allows one to visually determine the mean as well.

Let the missing number be x.

The sum of all the numbers will be

= 11 + 20 + 3 + 1 + x

= 35 + x

The total number is 5.

The mean is given to be 9.

The mean will be

9 = (35 + x) / 5

9 * 5 = 35 + x

45 = 35 + x

10 = x

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Related Questions

Jimmy has a new job and plans to start saving some money. he decides to use his knowledge of geometric series to set up a savings plan that will start off with him setting aside a small amount each week, and end with him saving a large amount. in each of the first 5 weeks of his job, he wants to raise $2 to the number of weeks he has been working, multiply it by 3, and add that amount to the savings account. use summation notation to write this as a sum and find the total amount jimmy will save in 5 weeks.

Answers

The equation that represents the amount saved is T(n) = 3 * (2^n), and the total amount saved in 5 weeks is $186

How to determine the sum of total amount?

The statement is given as:

raise $2 to the number of weeks he has been working, multiply it by 3,

Let the number of weeks be n.

So, we have:

T(n) = 3 * (2^n)

For week 1 to 5, we have:

T(1) = 3 * (2^1) = 6

T(2) = 3 * (2^2) = 12

T(3) = 3 * (2^3) = 24

T(4) = 3 * (2^4) = 48

T(4) = 3 * (2^5) = 96

The sum is then calculated as:

Sum = 6 + 12 + 24 + 48 + 96

Evaluate the sum

Sum = 186

Hence, the total amount saved in 5 weeks is $186

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20d + 0.7m = 235
Shelly spent $235 to rent a moving van. The equation above shows the relationship
between the number of days she rented the van, d, and the number of miles she drove
the van, m. If she rented the van for 3 days, how many miles did she drive the van?

Answers

The number of miles she drove the van for is 250 miles

Solving linear equations

From the question, we are to determine the number of miles Shelly drove the van

The given equation which shows the relationship between the number of days she rented the van, d, and the number of miles she drove the van, m is

20d + 0.7m = 235

Now, if she rented the van for 3 days, that is, d = 3

Putting the value of d = 3 into the equation to determine the value of m

We get

20(3) + 0.7m = 235

60 + 0.7m = 235

0.7m = 235 - 60

0.7m = 175

m = 175 / 0.7

m = 250

Hence, the number of miles she drove the van for is 250 miles

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Green paint can be made by mixing yellow and blue paint in a 2 : 5 ratio
What fraction of the green paint is yellow paint? Give your answer in its
simplest form.

Answers

Answer:

4 : 10

Step-by-step explanation:

Answer:

2/7

Step-by-step explanation:

there's seven parts in green (2 yellow and 5 blue)

two of them are yellow

so 2/7 is the fraction

(seven is prime so it's already in simplest form.)

Alice, a 16-year-old, gave birth to a baby boy last year. how will this affect the likelihood that her 13-year-old sister, marie, will have a baby

Answers

Answer:

I think that the actions of older people/family members around you greatly influence that thoughts/actions of a younger child. Since Marie looks up to Alice, Marie probably thinks that having a child at such a young age is a good idea. Therefore if Alice gave birth at the age of 15, there is a high chance her younger sister will follow in her footsteps.

(I'm not sure how this relates to math)

In Galton’s height data, the least-squares line for predicting forearm length (y) from height (x) is y = −0.2967 + 0.2738x.

Predict the forearm length of a man whose height is 72 in. Round the answer to three decimal places.

Answers

Using the line of best fit, it is found that the prediction of the forearm length of a man whose height is of 72 in is of 19.417 in.

What does the line of best fit state?

It states that the predicted forearm length of a person of height x is given by:

y = -0.2967 + 0.2738x.

In this problem, the height is of x = 72 in, hence:

y = -0.2967 + 0.2738(72) = 19.417 in.

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Place (dlick and drag) one option from each of the lists below Into Its corresponding box to
create an equation of the line that passes through the polnt (1, "10) and is perpandicular to y=-1/3 x +5

Answers

keeping in mind that perpendicular lines have negative reciprocal slopes, let's check for the slope of the equation above

[tex]y = \stackrel{\stackrel{m}{\downarrow }}{-\cfrac{1}{3}}x+5\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array} \\\\[-0.35em] ~\dotfill[/tex]

[tex]\stackrel{~\hspace{5em}\textit{perpendicular lines have \underline{negative reciprocal} slopes}~\hspace{5em}} {\stackrel{slope}{\cfrac{-1}{3}} ~\hfill \stackrel{reciprocal}{\cfrac{3}{-1}} ~\hfill \stackrel{negative~reciprocal}{-\cfrac{3}{-1}\implies 3}}[/tex]

so we're really looking for the equation of a line whose slope is 3 and passes through (1 , 10)

[tex](\stackrel{x_1}{1}~,~\stackrel{y_1}{10})\qquad \qquad \stackrel{slope}{m}\implies 3 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{10}=\stackrel{m}{3}(x-\stackrel{x_1}{1}) \\\\\\ y-10=3x-3\implies y=3x+7[/tex]

There is estimated to be a population of approximately 85 mice on Farmer Jon's Farm, and the population is tripling each year. Does the scenario above represent exponential growth or decay? write an equation to represent the scenario.​

Answers

Answer:

Exponential growth

Step-by-step explanation:

As it mentions that the population is tripling each year, we can clearly understand that it is exponential growth.

Equation

⇒ Let y be total population of mice and x the number of years

y = 85(3ˣ)

Hope it helps ~

Simplify the expression. Write your answer as a power.
The simplified expression is

Answers

Answer:

Answer = 6^7

Step-by-step explanation:

When multiplying expressions with exponent you add the exponents together. So here you would get 6^13/6^6. However you can simplify this farther since the base (6) is the same. When dividing expressions with exponents you subtract the exponents so the the answer would be 6^7.

Hope that helps! :)

If you were going to buy a $60 game, which would save you more money: a coupon for 30% off or a
$20 off coupon?

Answers

Answer:

A coupon for 30%

Step-by-step explanation:

A coupon takes the a certain percentage of a price and subtracts it (a discount). A coupon for 30% off takes 30% of the price which is $60 and subtracts it, same goes for the $20 off coupon. Because a greater percentage is being taken off of the price, the 30% off coupon would save someone more money.

Help please! Will give brainliest!!!!!!!!!!!!!!

Answers

Answer:

a is the same aand b is the sane

How can I find the x value?
How can I explain it?

PLEASE ANSWER THE QUESTION!!!

Answers

Answer:

Step-by-step explanation:
Discussion
What you have presented is called a cyclic quadrilateral. A cyclic quadrilateral is a 4 sided figure whose angles (4 of them) all touch the circumference of a circle.

Here's what you want to know. Two angles that are opposite each other are supplementary (they add to 180 degrees)

Equation
x + 80 = 180 Subtract 80 from both sides.

Solution
x + 80 - 80 = 180 - 80 Combine
x = 100

Answer
x = 100

pls help (this is for a frend)

Answers

[tex]~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\dotfill & \$5\\ P=\textit{original amount deposited}\\ r=rate\to 1.25\%\to \frac{1.25}{100}\dotfill &0.0125\\ t=years\dotfill &\frac{1}{2} \end{cases} \\\\\\ 5 = (P)(0.0125)(\frac{1}{2})\implies \cfrac{5}{(0.0125)(\frac{1}{2})}=P\implies 800=P[/tex]

Yuuma applied the steps below to find the product of (–10.2)(–16.4).

Step 1: (–10.2)(–16.4) = (–16.4)(–10.2)
Step 2: = (–16.4)(–10) + (–16.4)(–0.2)
Step 3: = ____________
Step 4: = 167.28

Which expression correctly fills in the blank in Step 3?
(–164) + (–3.28)
164 – 3.28
(–164) + 3.28
164 + 3.28

Answers

Answer:

164+3.28

Step-by-step explanation:

(16.4)(10)+(16.4)(0.2)

164+3.28

167.28

Identify coordinate point B. (0, 2) (1, 5) (7, 3) (6, 7)

Answers

Answer:

i think 1.5 imagine a dot so its on 5 and 1 then you get 1.5 thats what i think

Step-by-step explanation:

pls dont get mad if i got it wrong D:

Answer:(1, 5)

Step-by-step explanation:

12x+16y=336
Please help me find y intercept the answer should be 28 but guide me on the steps

Answers

12x + 16y = 336.
(move x to the right side, to have y by itself. so -12x on both sides)

16y = -12x + 336
(now divide each number by 16 to get Y on its own)

y = -12/16x + 336/16

y = -3/4x + 21

slope= -3/4
y-intercept= 21

10. A garden is to be surrounded by a paved
border of uniform width.
16 m
|-X-
L=16+X+x
L= 2x+16
W=14+x+x
W= 2x+14
14 m
a) Write a simplified expression for the
area of the border.
b) The border is to have an area of
216 m². Find the width of the border.

Answers

That’s why not I don’t like it when I’m done talking about it so I’m not sure why you don’t worry I just got home and I’m just tired and I

f(x) = 3x + 2
What is f(5)?

Answers

Answer:

17

Step-by-step explanation:

→ f(x) = 3x + 2

→ f(5) = 3(5) + 2

→ 15 + 2

→ 17 is the answer.

Answer:

F(5) = 17

Step-by-step explanation:

to solve, we just need to plug all values of x into 5 as shown

f(x) = 3x + 2
f(5) = (3*5) + 2

then following the format of PEMDAS (explained at footer) we solve the new equation

f(5) = (3*5) + 2
f(5) = 15 + 2
f(5) = 17

therefor F(5) is equal to 17

The PEMDAS format of solving equations:

the term Pemdas stands for the steps involved in solving an equation
Parenthasis (follow PEMDAS within these ( ) first untill in simplest form)
Exponents (such as x^y)
Multiply (any multiplication)
Devide (any devision)
Addition (any addition)
Subtraction (any subtraction)

hpe all this helps you ^^

The diameter of a circle is 42 ft. Find its area to the nearest whole number.

Answers

Answer:

5539 or 1764[tex]\pi[/tex]

Step-by-step explanation:

to find the area, we need the radius

The radius(R) is half of the diameter(D)

R = D/2

R = 42/2

R = 21

area of a circle(A) = pi x radius[tex]^{2}[/tex]

A = pi( which most times in a problem, equals 3.14) x 42[tex]^{2}[/tex]

A = 3.14 x 1764

A = 5538.96

A(when rounded) = 5539

Write a negative function h(x) with a y-intercept at "-4" with one solution

Answers

The required negative function h(x) with a y-intercept at "-4" with one solution is x + 4

Intercept of the equation

The y-intercept of an equation is the pint where the x-value of the function is 0, that is;

f(-4) = 0

Since the solution has one solution, hence it will be linear in nature

h(x) = x + 4

This gives the required negative function h(x) with a y-intercept at "-4" with one solution

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Mr. Brown picks out the time that appears the most to find the
. He arranges the times in increasing order and picks the middle value to find the
.

Answers

The correct answer is d I took that test

Please help me with question 36. I don’t know the answer

Answers

Answer:

Period = [tex]\frac{\pi }{4}[/tex]

Amplitude = 4

Step-by-step explanation:

To find the answer, use the form acos(bx - c) + d:

a = -4

b = 8

c = 0

d = 0

The amplitude is the absolute value of a, so:

|a| = |-4| = 4

To find the period, use this equation:

[tex]\frac{2\pi }{b}[/tex]

Replace b with 8 in the formula and solve:

[tex]\frac{2\pi }{8} = \frac{\pi }{4}[/tex]                Simplify

So, the period is equal to [tex]\frac{\pi }{4}[/tex]

Hope this helps!!

How to find maximum and minimum values of a parabola

Answers

Answer:

Step-by-step explanation:

Finding max/min: There are two ways to find the absolute maximum/minimum value for f(x) = ax2 + bx + c: Put the quadratic in standard form f(x) = a(x − h)2 + k, and the absolute maximum/minimum value is k and it occurs at x = h. If a > 0, then the parabola opens up, and it is a minimum functional value of f.

Shawna is going out of town for the day, so she asks a friend to watch her 3 dogs. She wants to leave
1/2 of a pound of food for each dog. If a can of dog food has 0.75 pounds of food, how many cans should Shawna leave?

Answers

Answer:

2cans

Step-by-step explanation:

1/2 = .5 so .5×3=1.5 and 1.5 ÷ .075 =2

I need help! its really hard to do

Answers

Hi, I’m not sure how to help with this but there is a website called Calculator Soup and I use it a lot. It’s very helpful. Good luck!

A. 611.18 b. 431.59 c. 395.59 d. 1,042.37. ASAP PLEASEE

Answers

Answer:

A

Step-by-step explanation:

convert 12 minutes 35 seconds to seconds

:_​

Answers

Answer:

755s

Step-by-step explanation:

60*12+35=755

This is the way

Answer:

755 seconds

Step-by-step explanation:

1min = 60 sec

12 x 60 = 720

720+35 = 755

:)

The table shows the results of rolling a number cube with sides labeled 1 through 6 several times.

What is the experimental probability of rolling a 3 or a 6?

Enter your answer as a fraction in simplest form in the box.
1 10
2 6
3 4
4 8
5 6
6 6

Answers

Total times die rolled =10+6+4+8+6+6=40

Times 3 and 6 appears

4+6=10

Experimental probability

P(3 or 6)

10/401/40.25

Answer:

[tex]\sf \dfrac{1}{4}[/tex]

Step-by-step explanation:

Experimental probability

Calculated by dividing the number of times an event happens by the total number of trials in an actual experiment.

[tex]\textsf{Experimental Probability} = \dfrac{\textsf{Number of times an event happens}}{\textsf{Total number of trials}}[/tex]

Total number of trials = 10 + 6 + 4 + 8 + 6 + 6 = 40

Total number of times rolling a 3 or a 6 = 4 + 6 = 10

[tex]\textsf{Experimental Probability of rolling 3 or 6} = \sf \dfrac{10}{4}=\dfrac{1}{4}[/tex]

what is 9 - 3 dived by 1/3 + 1 =

Answers

Remember order of operation PEMDAS
Equation: 9-3 ÷ 1/3 + 1
1. 3÷1/3= 9
2.9-9=0
3. 0+1=1
Son 9-3÷1/3+1=1

Rectangle pqrs had vertices p(-4,3),q(-2,5),r(3,0) and s(1,-2). the diagonals of the rectangle bisect eachother. atwhich point do the diagonals intersect?

Answers

Answer:

Step-by-step explanation:

4. The equation 2x = - 10 is modeled below.
What is the value of x makes the equation true?

Answers

Answer:

x = -5

Step-by-step explanation:

2x = -10 <== divide both sides by 2

/2      /2

x = -5

Check your work:

2x = -10

2(-5) = -10

-10 = -10

This statement is true

Hope this helps!

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