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:The lever operates by applying forces at different distances

Step-by-step explanation:

Answer:

The answer is $3.81

Step-by-step explanation:

Because 15.25 / 4 = 3.8125

3.8125 - 0.0025 = 3.81

Each ball costed $3.81

Answer:

5+5=10

Step-by-step explanation:

Boom

Answer: 2 donuts per hour

Step-by-step explanation: On the line, x is an hour and y is how many dough. Every time it lines up equally it has 2 dough per hour

Answer:

i think answer is 8 10

Step-by-step explanation:

i hope its help

Answer:

Mean = 16

Step-by-step explanation:

MEAN can be find bg the sum of all score divided by the amount of the score.

Mean = total amount / number of amount

Total amount = 2 + 3 + 5 + 9 + 17+ 22 + 31 + 39

= 128

number of amount = 2, 3, 5, 9, 17, 22, 31, 39

= 8

Then we can calculate mean as

Mean = 128/8

Mean = 16

Answer:

1. 125

2. 25

3. 40

4. 39

First question:

(15-10)^2 + (15-5)^2

parentheses first to get 5^2 + (15-5)^2

exponents next to get 25 + (15-5)^2

parentheses again 25 + 10^2

exponents again 25 + 100 = 125

Second question:

simplify the exponents (3 *3) + (4 * 4) + (2 * 2) to get 9 + 16 + 4 = 29

Third question:

simplify in the parentheses 6 1/7 - 1/7 = 6

divide 60 by 6 to get 10

multiply 10 by 4 to get 40!

Fourth question:

simplify the fractions to get 1/3 + 8/3 = 3

multiply the 3 by 13 to get 39

Answer:

Depending on how they want the ratio done, the ratio of toy planes to stuffed animal could be 7:15, 7/15, or 7 to 15.

Step-by-step explanation:

Ratio is just comparing something to something, for a lack of words. They asked for the number of toy planes compared to the number of stuffed animals, so all you have to write is 7 and 15

Answer:

For #1 no the doll wont fit in the box because there is 12 inches in a foot 12+12+8=32 so no.#2 Yes because half of of 85 is 42.5 and 85-17.6=67.4 and that wont make it half way.

Step-by-step explanation:

To determine the probability of rolling two even numbers, we need to find the favorable outcomes (outcomes with two even numbers) and divide it by the total number of possible outcomes.

The possible outcomes when rolling two dice are:

(1,1), (1,2), (1,3), (1,4), (1,5), (1,6)

(2,1), (2,2), (2,3), (2,4), (2,5), (2,6)

(3,1), (3,2), (3,3), (3,4), (3,5), (3,6)

(4,1), (4,2), (4,3), (4,4), (4,5), (4,6)

(5,1), (5,2), (5,3), (5,4), (5,5), (5,6)

(6,1), (6,2), (6,3), (6,4), (6,5), (6,6)

Out of these, the favorable outcomes (outcomes with two even numbers) are:

(2,2), (2,4), (2,6), (4,2), (4,4), (4,6), (6,2), (6,4), (6,6)

Thus, there are 9 favorable outcomes.

The total number of possible outcomes is 36 (since each die has 6 possible outcomes).

Therefore, the probability of rolling 2 even numbers is:

\(\text{Probability} = \frac{\text{Number of Favorable Outcomes}}{\text{Total Number of Possible Outcomes}} = \frac{9}{36} = \frac{1}{4} = 0.25\)

Hence, the probability of rolling 2 even numbers is 0.25 or 1/4.

Answer:

What are the examples I can't answer this without them

Step-by-step explanation:

Answer:

If Pi is approximated to 3.14, the circumference of the circle is 25.12 cm.

Step-by-step explanation:

Just do it - Nike

Step-by-step explanation:

the correcto anwar

es pero que te cirba

Answer:

The best prediction is that you will pick a green marble approximately 7 times and an orange marble approximately 5 times.

Step-by-step explanation:

If there are 5 orange marbles and 7 green marbles out of a total of 48 marbles, the best prediction for the number of times you will pick a green or an orange marble would still be proportional to the ratio of green and orange marbles.

The ratio of green marbles to the total number of marbles is 7/48, and the ratio of orange marbles to the total number of marbles is 5/48.

To predict the number of times you will pick a green marble, you can multiply the total number of selections (48) by the ratio of green marbles:

48 * (7/48) = 7

Similarly, to predict the number of times you will pick an orange marble:

48 * (5/48) = 5

Therefore, the best prediction is that you will pick a green marble approximately 7 times and an orange marble approximately 5 times.

Answer:

C and D

Step-by-step explanation:

This is a comparision  problem. (C)

The totla bar represents 30.8 miles. (D)

Caitlin ran 16.3 miles.

Hope this helps!

step explanation: it helped me with a lot of assignments.

Answer:

28+x

Step-by-step explanation:

6+6=12

8+8=16

12+16= 28

Answer:280 in

Step-by-step explanation: First we multiply the length by the width and that would be 7 by 10 and we would get 70. Next we multiply the height by the total of (l x w), so 4 x 70 would be 280. Margo needs a total of 280 inches of wrapping paper to cover the entire box. Hope this helps! :)

Answer:

the oldest elk=4(x)

second oldest elk=x+8

youngest elk=x

total spikes=32

4x+x+8+x=32

6x+8=32

6x=32-8

6x/6=24/6

x=4.

the oldest elk =4(4)=16

Step-by-step explanation:

the youngest elk=4

the second oldest elk=4+8=12

16+4+12=32

well, if you can go up down and sideways, I'd say, B, F, G, and D

Answer:

What?

Step-by-step explanation:

I'm confused

Answer:

Step-by-step explanation

Answer:

Point B is going to be(-11,7) And C is going to be (11,7)

Step-by-step explanation:

Point A is in the 4 quadrant and reflecting the x axis so point B is in the 2 quadrant. Point B reflects to the 1st quadrant that is how you get your answer.

Answer:

The first box

Step-by-step explanation:

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:

A. 0

Step-by-step explanation:

In order for there to be a 1 in 3 chance, there would have to be an equal number of the three chalices.  Since four is the smallest number, the other two must have four left as well.  That means Donavan drank 1 spoiled milk and 2 flat sodas.  Therefore, he drank 0 purified water.