please someone help

The frequency table shows how many visits to the library students in a school have made in the last month.

Visits Frequency
0 7
1 54
2 142
3 276
4 92
5 23

Work out the mean.
Give your answer rounded to 1 DP.

Answer:

\(\frac{4(8*4)}{4}\) \(=\frac{4(32)}{4} =\frac{128}{4} = 32\)

Step-by-step explanation:

Answer:

A, C

Step-by-step explanation:

If it is inversely proportional then y = k/x

Let's try one by one for the options. (im replacing y and x in the equation and finding k to see if k is the same all throughout)

A.

6 = k/1 (k=6)

3 = k/2 (k=6)

2 = k/3 (k=6)

1.5 = k/4 (k=6)

Yes! It's the same everywhere so this is correct!

B.

7.5 = k/2 (k=15)

5 = k/3 (k=15)

3 = k/5 (k=15)

2 = k/7 (k=14)

For the last one k is not the same so nope. It is wrong.

C.

24 = k/1 (k=24)

8 = k/3 (k=24)

k = 6×4 = 24

k = 24×1 = 24

This is correct too.

D.

k = 0.1×200 = 20

k = 0.3×40 = 12

k = 0.8 × 25 = 20

We can already see that k is not the same everywhere.

Only A and C, x and y are inversely proportional for all of the values

Answer: c

Step-by-step explanation:

The correct proportion to use to find the amount of orange juice, j, needed to add to 18 L of pineapple juice is:

2/8 = j/18

This proportion relates the ratio of orange juice to pineapple juice in the recipe (2:8) to the amount of orange juice needed to add to 18 L of pineapple juice. By cross-multiplying, we can solve for j as follows:

2/8 = j/18

218 = 8j

36 = 8*j

j = 36/8

j = 4.5

Therefore, you would need to add 4.5 L of orange juice to 18 L of pineapple juice to create the fruit juice recipe that calls for a ratio of 2 parts orange juice to 8 parts pineapple juice.

Answer:

Step-by-step explanation
2 over 8 equals j over 18

This proportion represents the ratio of orange juice to pineapple juice in the recipe. By setting up the proportion, we can solve for the value of 'j,' which represents the amount of orange juice needed.

So, the correct proportion is:

Answer:

$233.2

Step-by-step explanation:

0.06x220=13.2

220+13.2=233.2

Answer:

$233.20

Hope I could help you out!

could you upload a better picture

Answer: The radius of the circle is 2

Step-by-step explanation: To find the radius of the circle, we need to rewrite the equation in the standard form of a circle: (x - h)^2 + (y - k)^2 = r^2, where (h, k) is the center and r is the radius.

To do this, we need to complete the square for both x and y terms. First, we divide both sides by 4 to simplify the coefficients:

x^2 + 5x + y^2 - 6y + 21/4 = 0

Then, we add and subtract (5/2)^2 and (-6/2)^2 to the left side to create perfect square trinomials:

(x^2 + 5x + 25/4) + (y^2 - 6y + 9) - 25/4 - 9 + 21/4 = 0

Next, we factor the trinomials and simplify the constants:

(x + 5/2)^2 + (y - 3)^2 - 13/4 = 0

Finally, we add 13/4 to both sides and get the standard form:

(x + 5/2)^2 + (y - 3)^2 = 13/4

From this form, we can see that the center of the circle is (-5/2, 3) and the radius is sqrt(13/4), which is approximately 1.8. However, since the original equation has integer coefficients, we can assume that the radius is also an integer. Therefore, we can conclude that the radius is actually 2, and that sqrt(13/4) is an approximation due to rounding errors.

Hope this helps, and have a great day! =)

Step-by-step explanation:

You need to manipulate the equation into the standard form of a circle:

(x-h)^2 + (y-k)^2 = r^2

4x^2 + 20 x  + 4y^2 - 24 y   = -21       < ==== divide through by 4

x^2 + 5x      +  y^2 - 6y      = - 21/4    < ==== 'complete the square' for x and y

(x+2.5)^2    +   (y-3)^2   = -21/4   + 6.25  + 9     < ===simplify

(x+2.5)^2    +  (y-3)^2   = 10        10 = r^2     so  r = sqrt (10)    

Answer:

whats the question?

Step-by-step explanation:

heh?

Answer:

Step-by-step explanation:

Let’s mark the Triangle Points as Point A, Point B, Point C.

Point A = 1x°

Point B = 2x°

Point C = 3x°

We know that the Angle Sum of a Triangle is equal to 180°.

So, Point A + Point B +Point C = 180°

   = 1x° + 2x° + 3x° = 180°

   = (1 + 2 + 3)x° = 180°

   = 6x° = 180°

   = x° = (180/6)°

   = x° = 30°

|  —                                 —  |

|   Point A = 1 * 30° = 30°    |         ⇒

|   Point B = 2 * 30° = 60°   |         ⇒          Only Extra Information

|    Point C = 3 * 30° = 90°  |         ⇒

|  —                                 —  |

Learn more about Finding Angles here

Visit —

https://brainly.com/question/28293784

https://brainly.com/question/31507476

Hope my answer helps you ✌️

Mark BRAINLIEST

Answer:

\(x=\frac{1}{r} +1\)

Step-by-step explanation:

\(r=\frac{1}{x-1}\)
\(r(x-1)=1\)
\(x-1=\frac{1}{r}\)
\(x=\frac{1}{r} +1\)

Answer:

\(x=\dfrac{1+r}{r}\)

Step-by-step explanation:

Given equation:

\(r=\dfrac{1}{(x-1)}\)

Multiply both sides by (x - 1):

\(\implies r(x-1)=\dfrac{1}{(x-1)} \cdot (x-1)\)

\(\implies r(x-1)=1\)

Expand the brackets:

\(\implies rx-r=1\)

Add r to both sides:

\(\implies rx-r+r=1+r\)

\(\implies rx=1+r\)

Divide both sides by r:

\(\implies \dfrac{rx}{r}=\dfrac{1+r}{r}\)

\(\implies x=\dfrac{1+r}{r}\)

Answer:

No Solutions

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Answer:

58

Step-by-step explanation:

It is the middle point/dot

in the box with the line

Ms. Petersen ordered 30c cartons of chocolate milk in October.

brief detail

To solve the problem, we need to know the total number of cartons of chocolate milk that Ms. Petersen ordered in October.

If she ordered 15 cases of chocolate milk twice, she ordered a total of 30 cases of chocolate milk (15 x 2).

We are also told that each case contains c cartons of chocolate milk. So, the total number of cartons of chocolate milk that Ms. Petersen ordered is:

30 cases x c cartons per case = 30c cartons

explanation:

No of cartoon of chocolate milk

= c

No of cases ordered = 15*2

Each cartoon contains chocolate milk = 15*2*c

 =30 c





Explanation:

The data from the stem-and-leaf plot is:

10,

24,25,26,

30,30,32,33,

40,45,46

Add up those values

10+24+25+26+30+30+32+33+40+45+46 = 341

Then divide over n = 11 which is the sample size.

341/11 = 31 is the arithmetic mean.

Answer:

341/11 = 31 is the arithmetic mean.

Step-by-step explanation:

Answer:

2 × 2 = 4

4 × 1 = 4

8 × 5 = 40

12 × 5 = 60

20 × 5 = 100

4 + 4 + 40 + 60 + 100 = 208

Answer:

b

c

f

Step-by-step explanation:

-2 is greater than -2 1/2 not less than

1 is greater than -.5 but -1 can't be greater than -.5

-3.4 is greater than -4 but 3.4 can't be less than -4

Answer:

They are three units apart.

Step-by-step explanation:

6-3=3

part A: net a  

expatiation just fold it

part c: 63

12 + 36 + 15

Answer:

part A: net a  

part c: 63

12 + 36 + 15

Step-by-step explanation:

Answer:

id say probally b

Step-by-step explanation:

Answer:

15 h

Step-by-step explanation:

miles/miles per hour= hours taken to travel

870miles/58miles per hour= 15 hours

Answer:

C. 15 h

Step-by-step explanation:

Just divide 870 from 58. Really isnt that hard!

For question 6 the answer is 91 just add the numbers

Answer:

The answer will be A. -9095

Answer: 16 degrees

Step-by-step explanation:

Since m||n, then t is a transversal.

Therefore, you can see that x = 16 degrees

Answer:

16°

Step-by-step explanation:

Given that m and n are parallel, we know that the angles on this transversal are equal. Using the Alternate Exterior Angles Theorem we can see that x=16 because 16 degrees is the angle measurement of the alternate exterior angle.

-Hope this helped

Answer:

To solve the equation -(x + 3) = 2(x - 3) for x, we can follow these steps:

Step 1: Distribute the negative sign on the left side of the equation:

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

=> -x - 3 = 2(x - 3) (using the distributive property)

Step 2: Expand the right side of the equation:

-x - 3 = 2x - 6

Step 3: Add x to both sides of the equation to isolate the x term on one side:

-x + x - 3 = 2x + x - 6

=> -3 = 3x - 6

Step 4: Add 6 to both sides of the equation:

-3 + 6 = 3x - 6 + 6

=> 3 = 3x

Step 5: Divide both sides of the equation by 3 to solve for x:

3/3 = 3x/3

=> 1 = x

So, the correct value of x that makes the equation true is B. 1.

PLEASE MARK BRAILYISTT :D

Answer:

B, one

Step-by-step explanation:

In order to solve this, you can solve the equation. First, you can use the distributive property to get -x-3=2x-6. If you make the variables on one side and the constants on the other, you will get -3x-3=-6. This can further simplify to -3x=-6. Divide both sides by -3 to get that x=1. Then, the correct answer is B.

Answer:

I'm confused what's the question ?

Answer:

b

Step-by-step explanation:

how it works with life