Calculate x if the mean of 30, x, 12, 40, and 10 is equal to x.​

Answers

Answer 1

Answer:

23

Step-by-step explanation:

Let the mean also is x

Mean = Sum of all observations / Total no of observations

x = 30 + 12 + 40 + 10 + x / 5

5x = 92 + x

4x = 92

x = 23

Therefore 23 is the mean and also one of the numbers.

Answer 2

The value of x such that mean of  30, x, 12, 40, and 10 is equal to x will be 23.

What is mean?

The mean is the average of a data set. Mean gives us an idea of that how much amount of overall data have.

Mean = sum of data / Number of data

It is known that,

Mean = sum of data / Number of data

x = (30 + x + 12 + 40 + 10)/5

5x = x + 92

4x = 92

x = 23

Hence "The value of x such that mean of  30, x, 12, 40, and 10 is equal to x will be 23".

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Related Questions

Amber earned $14.50 babysitting on Saturday. On Sunday, she spent $6.95 when she purchased a movie ticket. She needed to borrow money from a friend to complete her purchase of a snack. How much money did Amber pay for the snack if she owes her friend $5?

(sorry for the second question in a short time loll, first to answer gets brainliest)

Answers

Answer:

$12.55

Step-by-step explanation:

14.50-6.95=7.55

7.55 for the snacks which is what was left over after the ticket and she owes her friend 5 so u add that on

7.55+5=$12.55

Inductive reasoning is based on
definitions.
facts.
patterns.
rules.

Answers

Your answer is option D rules

Answer:

patterns

Step-by-step explanation:

inductive reasoning is using past experiences to deduce future outcomes

In 1979, zoologists estimated the number of fish in a local pond to be about
540. In 1989, 10 years later, the zoologists estimated that the number of
fish had increased to 990. Assuming that the fish population increased
linearly, how many fish lived in the pond in 1986? *
ann

Answers

Answer:

693 fish

Step-by-step explanation:

In 10 years, we can tell that the amount of fish increased by 1.833...(990 divided by 540) times. If we divide 1.833... by 10, we can find how much the pond increases by yearly. we get 0.1833... If we multiply that by 7 (because the gap between 1986 and 1979 is 7 years), we get 1.2833... So, if we multiply 540 by 1.28333..., we get 693 fish.

Twice the difference of a number and 9 is equal to three times the sum of the number and 6. Find the number.

Answers

Answer:

2x-3=3x+6 is the right answer

Please answer step by step 8y-9y=

Answers

So your answer is -y

Expand each expressions and combine like terms if possible
-12(5/6x - 5) + 2x​

Answers

Answer:

The answer is

60 - 8x

Step-by-step explanation:

[tex] - 12( \frac{5}{6} x - 5) + 2x[/tex]

Using FOIL multiply the terms in the bracket

That's

[tex] - 12( \frac{5}{6} x) + 12(5) + 2x \\ \rarr \: \: - 10x + 60 + 2x[/tex]

Group like terms

That's

[tex]60 + 2x - 10x[/tex]

We have the final answer as

60 - 8x

Hope this helps you

B
D
E
С
3
In the figure above, tan B
If BC = 15 and DA = 4, what is the length of DE

Answers

Answer:

Step-by-step explanation:

{y2+8y−128=0x=34⋅(y+4) ... The two right triangle are similar, so: BDAB=DEAC. From this, I obtain: ... AC=3x AB=4x (3x)²+(4x)²=225 x=3 BD=8 AB/AC=BD/DE 12/9=8/DE DE=6.

The length of segment DE in the given triangle is 6 units.

What are trigonometric ratios?

Trigonometric Ratios are defined as the values of all the trigonometric functions based on the value of the ratio of sides in a right-angled triangle.

Given that, a right-angled triangle ABC, with a segment DE, where tan B = 3/4, BC = 15 and DA = 4

Since, tan B = 3/4

Cos B = 4/5

Cos B = AB / BC

therefore,

4/5 = AB / 15

AB = 12

BD = AB - AD = 12-4

BD = 8

Now, Tan B = 3/4

DE / BD = 3/4

DE / 8 = 3/4

DE = 6 units

Hence, the length of segment DE in the given triangle is 6 units.

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Help mehhhhh. ❗️The number of tickets sold on Friday at a movie theater was 2,000 more than the number of tickets sold on Tuesday. 1,250 tickets were sold on Tuesday. Which integer represents the number of tickets sold on Friday?

Answers

Answer:

3,250

Step-by-step explanation:

1,250 + 2,000 = 3,250

I hope this helps!

Answer:

The integer number is

3,250

Step-by-step explanation:

Tuesday ticket solds : 1,250

Friday ticket solds = 2000 + 1250 = 3250


Which situation can be represented by the equation x + 15 = 42?
Every bunch of bananas on a shelf has 15 bananas. If there are
42 bunches, how many bananas are on the shelf?
A gardener plants 42 plants in every row. The gardener planted
15 rows. How many plants have been planted?
Jim receives $15 for a barrel of glass bottles he collects for recycling.
If Jim received $42, how many barrels of glass bottles did Jim recycle?
If a grocer adds 15 pieces of fruit to a basket, there are now 42 pieces
in the basket. How many pieces of fruit were already in the basket?

Answers

Answer:

The last answer - If a grocery adds 15 pieces of fruit to a basket, there are now 42 pieces on the basket. How many pieces of fruit were already in the basket?

is something with/without a decimal greater?

Answers

Answer:

without

Step-by-step explanation:

Anything without a decimal is greater than something that does.

Answer:

without

Step-by-step explanation:

If it has no decimal, it is greater than a number with a decimal. The answer is without.

A guppy was swimming 8 feet below the surface of the river. It swam down 6 more feet
to escape a large, hungry fish. What is the position of the guppy now relative to the
surface?
To solve the problem, Jenna subtracted 8 - 6 and came up with an answer of 2 feet. Is Jenna
correct? Why or why not?
Yes, Jenna is correct.
No. The answer should have been -2 feet, not 2 feet, because the guppy is
below the surface.
No. Jenna should have subtracted -8 - 6 because the guppy started 8 feet
below the surface and swam down 6 more feet.

Answers

Answer:

No

Step-by-step explanation:

The answer should of been -14

Answer:

-8 feet

Step-by-step explanation:

Y=Mx+B what would m be

Answers

m would represent the slope. for example if your equation was y=5x+9, 5 is your slope and 9 is the y intercept

1.9 x (1/4) answer as a fraction

Answers

Answer:

19/40 1.9x0.25=0.475= 19/40

Answer:19/40

Step-by-step explanation:

I might be brain dead but can you help me and tell me how to solve this if I don’t have measurements?

Answers

Answer:

102 degrees

Step-by-step explanation:

Supplement means when both angles are added together they would equal 180. So,

78 + Angle 6 = 180

Angle 6 = 102

Write 43% as a decimal.

Answers

Answer:

0.43

Step-by-step explanation:

It's easy if you think of 43% as a decimal if you base it off 100. For example lets write a fraction about it: [tex]\frac{43}{100}[/tex]. A decimal you can think of the same way. 0.43 is the same as saying 43% of 100 or 43/100.

Use elimination to solve and match each system of equations to the correct solution 5x=15-5y
8y+26=2r Brainliest to the first answer I get

Answers

Answer:

40x=120

10r=130

Step-by-step explanation:

8(5x=15-5y)= 40x=120-40y

5(8y+26=2r)= 40y+130=10r

40x=120-40y

10r=130+40y

40x=120

10r=130

This is as far as I could get because the two numbers have two different variables, I couldn't subtract or add. It would be like subtracting apples from oranges... you can't

   [tex]\begin{cases}5x=15-5y\\ 8y+26=2x\end{cases}\\\\\begin{cases}5x+5y=15\\ -2x+8y=-26\end{cases}\\\\\begin{cases}(5x+5y)\cdot2=15\cdot2\\ (-2x+8y)\cdot5=-26\cdot5\end{cases}[/tex]

+  [tex]\begin{cases}10x+10y=30\\ -10x+40y=-130\end{cases}[/tex]       (adding first equation to second)

   [tex]\begin{cases}10x+10y=30\\{}\qquad50y=-100\end{cases}\\\\\begin{cases}10x+10y=30\\{}\qquad y=-2\end{cases}\\\\\begin{cases}10x+10(-2)=30\\y=-2\end{cases}\\\\ \begin{cases}10x-20=30\\y=-2\end{cases}\\\\ \begin{cases}10x=50\\y=-2\end{cases}\\\\ \begin{cases}x=5\\y=-2\end{cases}[/tex]  

Read each problem carefully and solve.
19. Ellie built 6/10 of a fort on Saturday and the rest on Sunday. How much of the fort did Ellie build on Sunday?

A. 1/100

B. 4/100

C. 60/100

D. 40/100

Answers

The answer is D, i’m almost positive.

Explain why the graph of the equation g(x)=-(x+1)^2-3 would be a parabola opening downward.

The parabola opens downwards since a=____ and this value is _____ 0.

The choices for the second blank question are:
-less than
-greater than
-equal to

Answers

g(x) = -(x + 1)^2 - 3

Let's simplify this equation

g(x) = -(x^2 + 2x + 1) - 3

Distribute the negative sign

g(x) = -x^2 - 2x + 1 - 3

Combine like terms

g(x) = -x^2 - 2x - 2

The value of a = -2 and this value is LESS THAN 0

which functions have Domains that are all Real numbers?

Answers

are there any answers you can choose from

Can someone please help me ASAP❤️

Answers

38,320 (for positive scientific notation you move the decimal to the right how ever many places, so move the decimal 4 places to the right in this case)

Show your work. Find the length of SU. (~Brainiliest will be awarded):)

Answers

Answer:

SU= 14

Step-by-step explanation:

if QU= 24 and RU= 19 then you can subtract 24-19=5. and if QR=RS=ST then you subtract 19-5=14

Julio is paid 1.4 times hiş normal hourly rate for each hour he works over 30 hours in a week. Last week he worked 35 hours and earned $436.60. Write and solve an equation to find Julio's normal hourly rate, r. Explain how you know that your answer is reasonable. *​

Answers

Answer:

Julio is paid 1.4 times his normal hourly rate for every excess hour he works in a week.

last week he worked 35 hours and got 436.60 dollars.

We need to find an equation so we can be able to solve Julio’s earnings:

=> Let X be the value of Julio’s rate

=> 30 * X + 5 x 1.4x = 436.6

=> 30x + 7x = 436.6

=> 37x = 436.6

=> 37x / 37 = 436.6 / 37

=> x = 11.8

Thus the original rate of Julio is 11.8 dollars

=> 1.4 x 11.8 = 16.52 dollars, the rate of Julio with added rate

=> 30 x 11.8  + 5 x 16.52

=> 354 + 82.6

=> 436.6

Step-by-step explanation:

Sonya is checking orders at the fabric store where she works. Some of the orders are in decimal and some are in fractions. Which of the following statements is not true?

Answers

Answer:

B is not true

Step-by-step explanation:

Which point is a solution of
y = 3x+4 ?
O (1,5)
O (2, 10)

Answers

Answer: (2,10)

Step by Step:
y=3x+4
10=3(2)+4
10=6+4
10=10

Half the sum of 42 and 16 What is The Expression

Answers

Answer:

i dont understand the question

Step-by-step explanation:

Answer:

(42+16)/2 = 29

Step-by-step explanation:

an expression contains operations and values

half the sum of 42 and 16

(42+16)/2 = x

(42+16)/2 = 29

How many miles per hour is 1 mile per minute

Answers

60 miles per hour will be the answer

24 t0 the power of 25th

Answers

Answer:

[tex] {24}^{25} = 3.201 \times {10}^{34} [/tex]

(Show your working) I uploaded the question

Answers

x^2 = the first integer

(x - 1)^2 = the second integer.

x^2 - (x - 1)^2 = ?

First, let's plug a number into our equation for x.

(2)^2 - (2 - 1)^2 = ?

4 - (1)^2 = ?

4 - 1 = 3

As we can see the difference is odd but it's also the sum of the two consecutive integers.

2 + 1 = 3.

This works for all numbers. Let's plug another number into our equation for x.

(4)^2 - (4 - 1)^2 = ?

16 - (3)^2 = ?

16 - 9 = 7

4 + 3 = 7

Try any number and it will always be odd.

Which charts or graphs always use axes both labeled with quantitative values and show individual points of data, meaning that each point matches with one value on the x-axis and one value on the y-axis? Check all that apply.
histograms
scatterplots
line graphs
pie graphs
bar graphs
frequency distributions

Answers

The correct choices would be scatter plots, line graphs, bar graphs option second, third, and fifth are correct.

What is scatter plot?

Scatter plots are graphs that represent individual points of data and are labeled with quantitative values on both the co-ordinate axes, meaning that there is only one projection on the x-axis and one projection on the y-axis for each point.

We have:

The chart or graph always use axes both labeled with quantitative values and show individual points of data.

Each point matches with one value on the x-axis and one value on the y-axis.

The chart or graph would be scatter plots, line graphs, bar graphs.

Thus, the correct choices would be scatter plots, line graphs, bar graphs.

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Answer:I belive it is b and c

Step-by-step explanation:

please help ! Easy 7th grade math ! It’s talking about integers!

Answers

Answer:

10. 12

Step-by-step explanation:

Number 10 is 12 but I don't understand number 11.

I hope this helps.

question 11- the answer is -7

since it’s saying “under par” it means that it’s in the negative area. so now that we know what the number is (7) and what area it is (negative) it’ll be -7 :)
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