the mean of 4 8 9 x and 2x is 6 calculate the value of x

Answers

Answer 1

Answer:

x = 3

Step-by-step explanation:

Mathematically, the mean is the sum of the numbers divided by the count of the numbers

The count of the numbers is 5

Thus;

( 4 + 8 + 9 + x + 2x)/5 = 6

(21 + 3x)/5 = 6

21 + 3x = 6(5)

21 + 3x = 30

3x = 30-21

3x = 9

x = 9/3

x = 3


Related Questions

What is the value of x in the figure? Enter your answer in the box.

Answers

Answer:

65

Step-by-step explanation:

2x+15 = 145

2x = 145-15

2x = 130

x = 65

Answer:

I think x=65

Step-by-step explanation:

Since both of the angles are vertical to one another that would mean they are equal to each other. When writing 2x +15=145 you would solve for x.

how line did you wait in line? is a statistical question

Answers

Answer:

yes

Step-by-step explanation:

hopes this helped;0

Sara is playing a board game. The probability that Sara will score a point on her next turn is 1/2 . Which statement describes the probability that Sara will score a point on her next turn? *

Answers

sara is unlikely to score a point on her next turn

Please help me what is the answer I need help fast

Answers

the first step is to convert the diameter into a radius measure by using the formula d=2r

when we solve the formula the radius is calculated to be 1.5

use the surface area formula above and your height and radius measurement to find out the area of sheet metal you would need.

2pi(1.5)^2+2pi(1.5)(5)

using 3.14 for pi this equates to 61.23in^2

The answer to this question is 61.23

Ms. Martin's classroom has lockers for the students to store their things.
The volume of the lockers is 40 ft”.
If the base is 4 feet by 2 feet, how tall are the lockers?

Answers

Answer:5
Because:4x2=8 which mean 40\8=5

Answer:

h = 5 feet

Step-by-step explanation:

V = lwh

40 = 4 x 2 x h

40 = 8h

h = 5

Algebra 2 Exponential Growth or Decay? Please

Answers

Decay,decay, growth. Usually you can tell by starting by looking from left to the right of the graph. Ok b the first two, the graph is going down while in the 3rd, the function is going up.

There will be Elizabeth and Izak record the number of miles they bike each day. The line plots show the distances they each biked for 5 days. How much greater was the shortest distance Izak biked than the shortest distance Elizabeth biked in 1 day

Answers

Answer:

See Explanation

Step by step Explanation:

The question is incomplete as the plots that show the distance traveled is not given.

So, I will answer the question with the attached plots.

The number of dots on each day represents the number of miles travelled on that day.

From Elizabeth's plot, the shortest is 1 mile on day 4 (i.e. 1 dot on day 4)

From Izak's plot, the shortest is 2 miles on day 3 (i.e. 2 dots on day 3)

Calculate the difference between both distances

[tex]d = 2\ miles - 1\ mile[/tex]

[tex]d = 1\ mile[/tex]

Hence, the shortest distance travelled by Izak is 1 mile more than the shortest by Elizabeth

Answer:

Step-by-step explanation:


If 1 US dollars can be exchanged for 0.55 Euros, how many Euros can be obtained when exchanging 47 U.S. dollars?

Answers

Answer:

25.85 Euros

Step-by-step explanation:

1 US dollar = 0.55 Euros

0.55 x 47 = 25.85 Euros

Hope this helped :)

Answer:

25.85 Euros

explanation:

If 1 US dollar equals .55 Euros then 47*0.55=25.85 Euros

Which pair of expressions is equivalent?​

Answers

Answer:

C is equivalent

Step-by-step explanation:

7/12*4/5

7*4/12*5

28/60

7/15

7/12/5/4

7/12*4/5

7*4/12*5

28/60

7/15

Jennifer is mowing the lawn. After 15 minutes, or 14 of an hour, Jennifer has mowed 23 of the lawn. At this rate, how long will it take Jennifer to mow the entire lawn?

Answers

Answer:

[tex]22.5\:\text{minutes}[/tex]

Step-by-step explanation:

In 15 minutes, Jennifer has mowed [tex]\frac{2}{3}[/tex] of the lawn (given in problem). This means that it will take her [tex]\frac{3}{2}\cdot 15=22.5\:\text{minutes}[/tex] to mow the entire lawn, assuming a constant rate.

Equation:

Let [tex]x[/tex] represent the entire lawn:

[tex]\frac{2}{3}x=15,\\x=\frac{15}{\frac{2}{3}}=15\cdot \frac{3}{2}=\boxed{22.5}[/tex]

make k the subject of the formula y=

Answers

Answer:

You forgot to send the question. Send the full question when you can

Nine tokens are black on one side and white on the another initially four tokens have the blackside upwards in each turn tell the least number of turns yo need to have all tokens showing the same colour

Answers

Answer:

2

Step-by-step explanation:

Let us name the white chips "W" and the black ones "B". If there are 9 tiles and 4 are in black then the rest, that is 5, in white, like this:

B-B-B-B-W-W-W-W-W

First movement, in turn we can flip 3 tiles, in this case we flip two blacks and one white, it would look like this:

W-W-B-B-B-W-W-W-W

The second movement is to turn the 3 black ones and thus they would all be blank

W-W-W-W-W-W-W-W-W

This means that, the smallest number of movements is 2.

I need this pleaseeee

Answers

Answer:

2(√17b³ )c⁵

Step-by-step explanation:

We are to simplify the expression given below

√68b³c¹⁰

Simplifying 68

= √(17 × 4)b³c¹⁰

Hence

= 2√17b³c¹⁰

= 2 √17b³ × √c¹⁰

= 2 √17b³ × c¹⁰/²

= 2(√17b³ )c⁵


Is this question a statistical question or a non statistical question : If I
surveyed the entire 6th grade and asked, "What is
your
favorite sport" *

A.Statistical
B.non Statistical

Answers

Answer:non statistical

Step-by-step explanation:

Answer:

Non- Statistical

Step-by-step explanation:

There are different types of sports. we need to narrow down every single sport.

The first 5 numbers of a sequence are shown below. Which of the following functions produces the sequence with n: {1, 2, ...,
n} ?
26, 35, 44, 53, 62,...
OA. fn) = 17-9n
OB. An) = 9n+ 26
OCfn) = 9n+ 17
OD. An) = 26 - 9n

Answers

The function that produces the sequence with n: [1,2,...,] is "f(n) = 9n + 17" (Option C). See the explanation below.

What is the explanation to the above answer?

Note that we want a function which produces the sequence 26, 35, 44, 53, 62, if {1, 2, 3......n} is plugged into it.

Lets test the function with the integer 1:

9 (1) + 17

= 9+ 17

= 26 [Correct]

Lets true 2;

9(2) + 17

= 18 + 17

= 35 [Correct]

Lets try 3;

9 (3) + 17

= 27 + 17

= 44 [Correct]

Hence the selected function (Option C) is correct.

Learn more about sequences:
https://brainly.com/question/6561461
#SPJ1

what is the answer to -3/4-1/2

Answers

Answer:

-5/4

Steps:

-3/4 - 1/2

-3/4 - 2/4

(-3-2)/4

-5/4

2. X 0 4 7 10 13 y -5 -5 -5 -5 -5 Domain: ______________________ Range: _______________________ Function? _______

Answers

Answer:

[tex]Domain =\{0,4,7,10,13\}[/tex]

[tex]Range = \{-5\}[/tex]

[tex]y = -5[/tex] --- function

Step-by-step explanation:

Given

[tex]\begin{array}{cccccc}x & {0} & {4} & {7} & {10} & {13} \ \\ y & {-5} & {-5} & {-5} & {-5} & {-5} \ \end{array}[/tex]

Solving (a): The domain

The x values represent the domain.

Hence, the domain is:

[tex]Domain =\{0,4,7,10,13\}[/tex]

Solving (b): The range

The y values represent the range

Hence, the range is:

[tex]Range = \{-5\}[/tex]

Solving (c): The function

By observation, we can see that for all values of x the value of y remains unchanged (-5)

Hence, the function is:

[tex]y = -5[/tex]

Please I need help!!! NO LINKS!!!!!
The point ( − 2, 3) is the solution to which of the following equations?

A.y=x−1

B.y=3x−2

C.y=−x+1

D.y=−2x+3

Answers

I think is B because

D shows the same equation… but the number is negative and B is negative number :)
It’s b just because it’s the only one with -2

Mrs. Jasper has some 8-ounce cups for serving punch. Her punch bowl holds 2 gallons of punch. Mrs. Jasper thinks she can serve forty 8-ounce cups of punch to her guests from the punch bowl.

Explain whether or not Mrs. Jasper is correct. Show all work to support your explanation.

Answers

Answer:

She is wrong

Step-by-step explanation:

in one gallon there is 128 ounces, and 2 would make it 256.

40 - 8 ounce cups would make it 320 ounces, therefore she would need 3 gallons at least.

Answer:

she is wrong

Step-by-step explanation:

in one gallon there is 128 ounces, and 2 would make it 256. 40 - 8 ounce cups would make it 320 ounces, therefore she would need 3 gallons at least.

Find the distance between the two points rounding to the nearest tenth (if necessary).
(-6, 6) and (-3,3)

Answers

Answer:

[tex]\boxed {\boxed {\sf d\approx 4.2}}[/tex]

Step-by-step explanation:

The formula for distance is:

[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2[/tex]

Where (x₁, y) and (x₂, y₂) are the points.

We are given (-6, 6) and (-3, 3). If we match the value and its corresponding variable, we see that:

x₁= -6 y₁ = 6 x₂ = -3 y₂ = 3

Substitute the values into the formula.

[tex]d= \sqrt{ (-3 - -6)^2+(3-6)^2[/tex]

Solve inside the parentheses.

-3 --6 = -3+6 = 33-6 = -3

[tex]d= \sqrt{(3)^2+ (-3)^2[/tex]

Solve the exponents.

(3)²= 3*3= 9 (-3)²= -3*-3 =9

[tex]d= \sqrt{9+9[/tex]

Add.

[tex]d= \sqrt18[/tex]

[tex]d= 4.24264069[/tex]

Round to the nearest tenth. The 4 in the hundredth place tells us to leave the 2 in the tenth place.

[tex]d \approx 4.2[/tex]

The distance between the two points is apprximately 4.2

A goat and a cow together weigh 190 kg 640 g. The weight of the goat is 59 kg 720 g. Find the weight of the cow

Answers

Answer: 130 kg 920 g

Step-by-step explanation:

Given

The weight of the goat is 59 kg  720 g

The combined weight of goat and cow is 190 kg 640 g

Suppose, the weight of the cow is x kg

We know, 1 kg=1000 g

Converting weight into kg

Goat weight

[tex]=59+0.720\\=59.720\ kg[/tex]

Total weight

[tex]=190+0.640\\=190.640\ kg[/tex]

Then, the cow weight is given by

[tex]\Rightarrow 190.640-59.720\\\Rightarrow 130.920\ kg\ \text{or}\ 130\ kg\ 920\ g[/tex]

Please show full solutions! Will mark brainliest for the best answers! Thanks. Question is attached. THANKS AGAIN!

Answers

9514 1404 393

Answer:

  -4.2

Step-by-step explanation:

The linear term is missing from the quadratic, which means it is symmetrical about the vertical line x=0. For each x-intercept greater than 0, another is its opposite. The opposite of 4.2 is -4.2

The other x-intercept is -4.2.

__

Consider the parent function ...

  y = x^2

which is symmetrical about the y-axis.

Transforming it to ax^2 +k causes it to be scaled vertically by a factor of 'a', and shifted vertically up k units. Neither of these transformations affects the horizontal position of the curve, so it remains symmetrical about the y-axis. Attached is one example of a quadratic of this form with an x-intercept of 4.2.

please help with these questions and show how u found them! i will mark brainliest !

Answers

Answer:

Step-by-step explanation:

Question 3

5 (k + 4) - 2k

Use distributive property of multiplication.

5k + 20 -2k

Combine like terms to get your answer.

3k +20

Question 4

2 (3 + d - 1)

Simplify the expression in the parenthesis.

2 (2 + d)

Use distributive property of multiplication.

4 + 2d

If you wanted it to be accepted at higher levels, switch the terms around.

2d + 4

In △LMN , the measures of the angles L, M, and N, respectively, are in the ratio 1:2:5. Find the measure of each angle.

Answers

Answer:

1- 22.5°

2- 45°

5- 112.5°

Step-by-step explanation:

[tex]180 \div 8 = 22.5[/tex]

[tex]22.5 \times 5 = 112.5[/tex]

[tex]22.5 \times 2 = 45[/tex]

[tex]22.5 \times 1 = 22.5[/tex]

During the last basketball season, Alice made 320 out of 360 free-throw attempts. Betty made 300 free-throws out of 320 attempts. Cathy made 90% of her free—throws. Denise had an average of 0.913 for successful free-throws.

Answers

Answer:

Cathy made 288 free throws out of 320 and 324 free throws out of 360

Step-by-step explanation

What is the slope of the line?

Answers

Answer:

solpe=-1

Step-by-step explanation:

slope = (y2-y1/X2-X1)

(2,0) (0,2)

(2-0/0-2)

2/-2

slope= -1

Who could help me with this please and thank you

Answers

Answer:

x = number of students in each van = 16

y = number of students in each bus = 47

(bus, van) = (47, 16)

Step-by-step explanation:

Let

x = number of students in each van

y = number of students in each bus

This can be represented by the equation

7x + 6y = 394 (1)

3x + 12y = 612 (2)

Using elimination method

Multiply (1) by 2

14x + 12y = 788 (3)

3x + 12y = 612 (2)

Subtract (2) from (3) to eliminate y

14x - 3x = 788 - 612

11x = 176

x = 176/11

x = 16

Substitute x = 16 into (1)

7x + 6y = 394 (1)

7(16) + 6y = 394

112 + 6y = 394

6y = 394 - 112

6y = 282

y = 282/6

y = 47

x = number of students in each van = 16

y = number of students in each bus = 47

(bus, van) = (47, 16)

hey! i’ll give brainliest thanks

Answers

Answer:

Cyrus defeated Medes and the Babylonians.

More Info:

By the 6th century BC, the Medes had built a large empire that included the Persians to the east and the Assyrians to the west. However, in 550 BC Cyrus the Great of Persia conquered the Medes, acquiring Assyria in the process.

another one plz help

Answers

Answer:

the answer is the 3rd one

The 4th one :) 4(10+6)

hello please help i’ll give brainliest

Answers

Answer: 81

Step-by-step explanation: The median is the middle number in a sorted, ascending or descending, list of numbers and can be more descriptive of that data set than the average. Write all of the numbers and cross out a even amount of numbers on both sides. Image 1 shows your problem. If your problem had another number, you solve it differently. Check image 2.

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