A class has 10 students with ages 3 3 3 3 3 4 4 4 4 5. If a student is chosen randomly, the probability of the student being age 3 is 5/10 or 0.5, age 4 is 4/10 or 0.4, and age 5 is 1/10 or 0.1. What is the expected age of a randomly chosen student?

Answers

Answer 1

Answer:

3.

Step-by-step explanation:

because they have more change to be pick wife they have more higher percentage of the class


Related Questions

Which shows the expressions rewritten with the least common denominator?
7x-2
and
x-1
8x
28X-8
and
2x² - 2x
16x?
16x?
14x - 4
and
2x-2
8x?
8x?
28x2-8x 2x3 - 2x²
and
16x
16x?
14x - 4
and
8x2
8x?

Answers

Answer:

Heyyyyy, use https://www.bartleby.com/  it has helped me out a lot & has literally saved my grades. Its actual tutors/teachers who answer your questions in about 30 minutes !!!!!!!!

Answer:

This question is missing a denominator!

it is 7x-2/4x^2 and x-1/8x

I do not know the answer though....I came here looking for help!!

Step-by-step explanation:

What is the explicit formula for the arithmetic sequence 4/5, 29/30, 17/15, 13/10?

Answers

Answer:

The answer is D,

a(n) = 4/5 + 1/6(n- 1)

just took the test :)

Step-by-step explanation:

The explicit formula for the arithmetic sequence is D, a(n) = 4/5 + 1/6(n- 1)

What is arithmetic sequence?

An arithmetic sequence is sequence of integers with its adjacent terms differing with one common difference.

The explicit formula is given by:

[tex]T_n = a + (n-1)d[/tex]

Where a is the first term (4/5) and d is the common difference (the difference is any 2 terms).

Therefore, to find d:

29/30 - 4/5

29/30 - 24/30

d = 5/30

d = 1/6

Now putting them into the formula:

a(n) = 4/5 + 1/6(n- 1)

The last answer choice is right.

Learn more about arithmetic sequence here:

https://brainly.com/question/3702506

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Hank spent $635.71 on groceries. Peggy spent $293.96 on groceries. They decide to split the entire grocery bill, which is $929.67. How much does Peggy still owe Hank if they split the grocery bills equally?

Answers

Answer:

170.87 or 10.875 is u round it then its 170.88

I need help with these 2.

Answers

Answer:

A^2 + B^2=C^2

Step-by-step explanation:

21^2 + 28^2= c/c

For the second answer its just backwards.

What is the most common weight?" 10 points This dot plot shows the weights of backpacks, in kilograms, of 50 sixth-grade students at a school in New Zealand.​

Answers

Answer:

4

Step-by-step explanation:

i think its correct

At a zoo, 7 lizards ate 35 grams of insects in one
night. At this rate, how many grams of insects could
36 lizards eat in one night?

Answers

Answer 180 grams of insects

Explanation 7 •\• by 35 = 5 grams each/night.
36 x 5= 180 grams

20 pts!!! What is the surface area of the pyramid?

Answers

Answer:

A≈99.33

Step-by-step explanation:

=lw+l(w

2)2+h2+w(l

2)2+h2=5·5+5·(5

2)2+72+5·(5

2)2+72≈99.33034

Felicia bought 12 packets of tomato seeds. Each packet
contained 24 seeds. She planted 1 packet of the seeds, and
15 seeds sprouted.
Which statement about the seeds in the remaining packets
is best supported by this information?
Between 150 and 200 seeds will sprout.
No more than 100 seeds will sprout.
At least 200 but no more than 264 seeds will sprout.
All 264 seeds will sprout.

Answers

Answer:

Between 150 and 200 seeds will sprout

activity 7 circles and terms related to it☺​

Answers

Answer:

Step-by-step explanation:

The pats of the circle R required are:

1. A circle - ABCD

2. Four radii - AR, BR, CR, and DR

3. Two diameters - AB and CD

4. Two tangents - GA and TB

5. A chord - BC

6. Two secant each containing a diameter - ARB and CRD

7. The longest chord - AC = DB

8. Two points of tangency - A and B

9. Four minor arcs - AC, CB, BD, DA

10. Four major arcs - AB, BA, CD, DC

20
A wildlife biologist tracks the number of wolves in a particular region. Data for 15 months is shown. Use the
data to make a frequency table with intervals.
15, 19, 24, 28, 26, 29, 17, 16, 17, 14, 22, 20, 18, 27, 27

Answers

Answer:

A wildlife biologist tracks the number of wolves in a particular region. Data for 15 months is shown. Use the

data to make a frequency table with intervals.

15, 19, 24, 28, 26, 29, 17, 16, 17, 14, 22, 20, 18, 27, 27

a. Wolves Observed

Number of Wolves Frequency

15  19 6

20  24 3

25  29 5

c. Wolves Observed

Number of Wolves Frequency

14  17 5

18  21 3

22  25 2

26  29 5

b. Wolves Observed

Number of Wolves Frequency

14  16 3

17  19 4

20  24 3

25  29 5

d. Wolves Observed

Number of Wolves Frequency

14  17 5

18  21 3

22  25 3

26  29 4

Brainliest stars

Solve for m.
9m - (6m - 7) = 2 (m - 3)
A. -13
B. -10
O c. 1
D. 4

Answers

the answer should be A.13

Answer:

A) -13

Step-by-step explanation:

Right equation:

-13-3×2= -32

Left Equation:  

-13×9= -117

-13×6-7-85

-117-(-85)=-32

Can I please have Brainliest?

-136=-8(7-2x) what is the value of x

Answers

Answer:

x=-5

Step-by-step explanation:

hope i helped

Cuantas horas son de 7am a 5 pm

Answers

Answer:

10 hours or diez horas

Step-by-step explanation:

El total de horas entre las 7 am y las 5 pm es de 10 horas (5+5).

(English)

What is a clock?

A clock, often known as a timepiece, is a device that measures and displays the passage of time.

The clock works in 12 hours time period, therefore, the time between 7 am and 12 pm is 5 hours, similarly, the time between 12 pm and 5 pm is 5 hours.

Thus, the total hours between 7 am and 5 pm is 10 hours(5+5).

(Spanish)

¿Qué es un reloj?

Un reloj, a menudo conocido como reloj, es un dispositivo que mide y muestra el paso del tiempo.

El reloj funciona en un período de tiempo de 12 horas, por lo tanto, el tiempo entre las 7 am y las 12 pm es de 5 horas, de manera similar, el tiempo entre las 12 pm y las 5 pm es de 5 horas.

Así, el total de horas entre las 7 am y las 5 pm es de 10 horas (5+5).

Learn more about Clock:

https://brainly.com/question/12528769

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A submarine is 200 feet below sea level.

Answers

It is 200 feet below sea level guess what soo coool

Answer:

omg cool I never knew omggggg!!!! PLSSS

equation on
1) 3x + 4 = 2x + 6
2) 4x - 9 = 2x + 1
3) 4x - 3 = x + 6
4) 5m - 2 = 16 - 4m

Answers

1.) 7x = 8x

2.) -5x = 3x

3.) 1x = 6x

4.) 3m = 12m

Find the length of the indicated segments of each trapezoid.

Answers

Answer:

BC = 31

EF = 38

AD = 45

Step-by-step explanation:

. In the casino game roulette, a wheel with 38 spaces (18 red, 18 black, and 2 green) is spun. In one possible bet, the player bets $1 on a single number. If that number is spun on the wheel, then they receive $36 (their original $1 $35). Otherwise, they lose their $1. On average, how much money should a player expect to win or lose if they play this game repeatedly

Answers

Answer:

For each game, the player should be expected to lose $0.0263.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Probability of each outcome:

1/38 probability of winning, that is, 1/38 probability of receiving $36.

37/38 probability of losing, that is, 37/38 probability of losing $1.

On average, how much money should a player expect to win or lose if they play this game repeatedly?

For each game:

[tex]E(X) = \frac{1}{38}*36 - \frac{37}{38}*1 = \frac{36 - 37}{38} = -\frac{1}{38} = -0.0263[/tex]

For each game, the player should be expected to lose $0.0263.

Find the area of the shaded region. Round to the nearest tenth.

Answers

Answer: 2,827.43

Step-by-step explanation:

Scientists have put together bones to make a T-Rex skull that has a mass of 600 pounds. They just found a new tooth fossil to add to the skull that has a mass of 40 ounces. How many pounds is the T-Rex skull with the new tooth?

Answers

Answer:

16 ounces = 1 pound

meaning 2.5 pounds is added to the skull, 602.5 pounds.

Step-by-step explanation:

Answer:

have a good day

Step-by-step explanation:

hope it helps

1/2 ÷1/5
create a story problem​

Answers

Answer:

Step-by-step explanation:

Reduce the expression, if possible, by cancelling the common factors.

Exact Form:

5 /2

Decimal Form:

2.5

Mixed Number Form:

2  1/ 2

Answer:

There is half of a pie left. Bob need to share it with four friends how big are the pieces compared to the pie.

ANSWER:

1

__

10

Step-by-step explanation:

Evaluate the function.
[tex]f(x)=3x^{2} +2x\\\\f(3)=[/tex]

Answers

Simply plug 3 into the equation.

[tex]f(3) = 3(3)^2+2(3) = 3(9) + 6 = 27 + 6 = 33\\\\\\f(3) = 33[/tex]

Answer:

Step-by-step explanation:

Plugin x = 3 in the function

f(x) = 3x² + 2x

f(3) = 3*(3)² + 2*3               {3² = 3*3 = 9}

     = 3*9 + 6

     = 27 + 6

f(3) = 33

Who do historians believe created the first American flag

Answers

Answer:

Besty Ross

Step-by-step explanation:

Brainllest

which expression is equivalent to the expression given below 2(x-3) + 4x + 3

Answers

Answer:

6x-3

youre welcome

6x-3

that is the answer I got it right

Find the values of acts and why. Dragon drop the correct values in the box is below:

Answers

Answer:

This is a 30° x 60° x 90° triangle.

The ratio of sides in same triangle:

x : y : 10 = 1 : √3 : 2

Find x:

x = 10/2 = 5

Find y:

y = x√3 = 5√3

7. The following numerical ordered sequence of numbers has a mean of 13 and a median of 14. 4. a. 8. 10. 13.b. 16. 18. 20:21 Gven this information, the values of a ondo must be: ​

Answers

Answer:

a = 9

b = 19

Step-by-step explanation:

DO B FIRST

The mean is the average of all the terms (numbers) in the sequence

To find the average you find the sum of the terms and divided the sum by the number of terms there are.

The mean times the number of terms equals the sum of all the terms subtract the terms that you know from the sum to get A

a = 17(10)-7-12-15-17-19-20-22-24-25

a = 170-161

a = 9

The median is found by taking the average of the two middle terms

Our middle terms are 17 and B

the median times 2 equals the sum of the two terms and then subtract the term you know from the sum

b = 18(2)-17

b = 36-17

b = 19

PLEASE HELP!!!!!!!!!!!!!!!!!!!!!

Answers

11/5x-1 this should be the answer

Ms. Wall will roll two number cubes. What is

the probability that she will roll a sum of 9 ?

Express your answer as a fraction.

(I'll give brainlist if u get it right)

Answers

Probability of rolling a sum of 9 or a sum that is even from two number cubes is
11/18
Explanation:
When a dice is rolled there are different ways in which
9. can be obtained, which are (3,6) or (4,5) or (5,4) or (6,3). 4 options. As in all there are
6⋅6=36 options, probability is 4/36 or 1/9.

For getting an even number as sum, we can have (1,1) or (1.3) or (1,5) or (2,2) or (2,4) or (2,6) or (3,1) or (3,3) or (3,5) or (4,2) or (4,4) or (4,6) or (5,1) or (5,3) or (5,5) or (6,2) or (6,4) or (6,6) 18 options, probability is 18/36 or 1/2.

Note that the two events (getting 9 or even sum) are mutually exclusive, the probabilities can be just added i.e. combined probability is
1/9+1/2=2+9/18i.e. 11/18

Answer: 9/1

Step-by-step explanation: Apologies for the mistake. Let's calculate the probability again.

To find the probability of rolling a sum of 9 on two number cubes, we need to determine the number of favorable outcomes and divide it by the total number of possible outcomes.

For a sum of 9, the following combinations are favorable:

(3, 6), (4, 5), (5, 4), (6, 3)

So, there are 4 favorable outcomes.

The total number of possible outcomes is still 6 × 6 = 36.

The probability of rolling a sum of 9 is:

Probability = Number of favorable outcomes / Total number of possible outcomes

Probability = 4 / 36

Simplifying the fraction, we get:

Probability = 1 / 9

Therefore, the probability of rolling a sum of 9 is 1/9, not 11/18 as previously stated.

Megan is going to organize her stamp collection into a 240-page book. She has organized 150 pages. What percent of her pages has she organized?

A- 60%
B- 50%
C- 62.5%
D- 75%

*6th Grade Mathematics*

Answers

Answer: C- 62.5
Steps: 62.5% of 240
= 62.5/100
= 0.625 x240
= 150
Therefore 62.5% has been organized.

A. y - 1/2x+10
B. y = 2x+ 13
C. y = -2x-5
D.y-1/2x+8

Answers

Answer: B. y = 2x+ 13

Step-by-step explanation:

1/2 of 1/3 is help please

Answers

Answer:

1/6

Step-by-step explanation:

To find the answer:

1/2 x 1/3 = 1/6

1/2x1/3=1/6 because (of) means multiply so multiply 1x1 equals 1 and 2x3 equals 6 so the answer is 1/6



Hope this helps :)
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