Mathematics Middle School

A bag of marbles contains 4 red
marbles, 5 green marbles, and 3 blue marbles. Karen takes a marble out, replaces it and pulls another marble,
what is the probability both the first marble is blue
and the second marble is red?

Answers

Answer 1

Answer:

50%

Step-by-step explanation:

Answer 2
2/14 because u have 12 marbles all together plus if u have 2 extra ones that are blue then it’s 14

Related Questions

what is the answer to this math n

Answers

Answer:

s = 16

Step-by-step explanation:

[tex]\frac{s}{4} +12=16[/tex]

step 1 subtract 12 from each side

12 - 12 cancels out

16 - 12 = 4

now we have [tex]\frac{s}{4}=4[/tex]

step 2 multiply each side by 4

[tex]\frac{s}{4} *4=s[/tex]

4 * 4 = 16

we're left with s = 16

What is the slope of this line?

Answers

Answer:

Using two of the points on the line, you can find the slope of the line by finding the rise and the run. The vertical change between two points is called the rise, and the horizontal change is called the run. The slope equals the rise divided by the run: Slope =riserun Slope = rise run .

Step-by-step explanation:

The slope is 5/2 or 5 over 2

What is the Mean of this data set {2,5,5,6,8,8,9,11}

NO LINKS

Answers

Answer: 6.8

Step-by-step explanation:

Add all of them, and then divide them by 8

Answer:

The mean is 6.75

Step-by-step explanation:

There are 8 numbers in the set. Add them all, and then divide by 8.

2 + 5 + 5 + 6 + 8 + 8 + 9 + 11 / 8=54/8=6.75

So, the mean is 6.75!

Hope this answer helps!

solve -4(r- 2/3) +4 <-8

If correct I will give brainy. ASAP.

Answers

Answer:

6.67<-8

Step-by-step explanation:

-4(r- 2/3) +4= 20/3

20divided by 3 =6.666666667 which rounds to 6.67

6.67 < -8

Hope this is helpful! :)

Answer:

See explanation for answer.

Step-by-step explanation:

−4(r−2/3)+4<−8

−4r+20/3<−8

−4r+20/3−20/3<−8−20/3

−4r<−44/3

−4r/−4<−44/3/−4

Answer: r>11/3

I hope this helps!

Have a lovely day!

( I'm not sure if this is correct. Sorry, math is not my strongest subject. )

Resources Link: https://www.mathpapa.com/equation-solver/

what is the value of k?

Answers

Answer:

I think the answer is 2.. I'm sorry if its incorrect.

Step-by-step explanation:

Help please! Also don't comment if you don't know or you claim you'll 'send me the link'

Answers

Hey, I worked out the answer for your last problem but Brainly wouldn’t let me comment so I’m leaving it here. Here it is:

find the scale factor. simplify your ratio to lowest terms. the original triangle is triangle lmn and the new one is triangle xyz

Answers

Answer:

5:2

Step-by-step explanation:

Triangle LMN's base length is 15 and triangle XYZ's base length is 6. Since they are both base lenghts, you can just use those numbers in a ratio and simply.

15:6

Divide both sides by 3 and you get 5:2!

Zahara asked the students of her class their gymnastic scores and recorded the scores in the table attached to the question

Based on the table, what is the mean gymnastic score?
2.5
3.5
5.2
9.4

// if you answer anything like "good luck", "i dont know", "who knows", "i posted the link to a hosting service" - i will go to your profile and report all of your answers.

Answers

Answer : 5.15
Explanation : I did the math
To find the mean add all of the numbers listed,then divide by how many total numbers there are.So 2.5+3.5+5.2+9.4=20.6 and if you divide that by how many numbers there are,4, you get 5.15

GIVING BRAINLIEST ONLY IF 100% CORRECT-NO LINKS

Answers

Answer:

A = ( 1 , 2 )

B = ( 4 , 11 )

C = ( 6 , 4 )

D = ( 10 , 9 )

Answer:

A. (1,2), B. (4,11), C. (6,4), D. (10,9)

Step-by-step explanation:

A. On the x line, it is 1 so the number is (1, ?). On the y-line it is 2 so the point is (1,2)

B. On the x line,  it is 4 so the number is (4,?). On the y-line, it is 11 so the point is (4,11).

C. On the x line, it is 6 so the number is (6,?). On the y-line, it is 4 so the point is (6,4).

D. On the x line, it is 10 so the number is (10,?). On the y-line, it is 9 so the point is (10,9).

If this helps please mark as brainliest

last on omg yessss i can go to sleep

Answers

Answer: t = 33

Step-by-step explanation:

t + 5 = 38

    -5   -5      subtract 5 from both sides in order to isolate t

t = 33

T = 33 I hoped this helped

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Answers

I believe the answer is 21

help pleasee
giving brainliest​

Answers

Answer:

the answer is the fourth one

Step-by-step explanation:

the canaanites practiced polytheism

The answer is the 4th one

this one too keep saying it wrong

Answers

Hi

The answer is 50.24in^3

Hope this Helps

(Tell me if my answer is correct)

Answer:

V≈234.57

Step-by-step explanation:

This is the correct answer, try it!

How do you solve this?

Answers

Not sure if you wanted answers or explanation on what to do. Ill just do the explanation and if you want the answers just lmk C:

R=1/2 d, and C=pi*2r. So you basically take the given number and plug it into these formulas.

Answer:

21. D = 5.67(rounded to the hundredths)

R = 2.84(rounded to the hundredths)

22. D = 13.4

C = 42.08(rounded to the hundredths)

23. C = 33.28(rounded to the hundredths)

R = 5.3

24. D = 1

R = 1.57 or pi/2

Step-by-step explanation:

Formula: C/pi = D

D = 2r

pi = 3.14

21. D = 17.8/3.14 = 5.67(rounded to the hundredths)

R = 5.67/2 = 2.84(rounded to the hundredths)

22. D = 6.7*2 = 13.4

C = 13.4 * 3.14 = 42.08 (rounded to the hundredths)

23. C = 10.6 * 3.14 = 33.28(rounded to the hundredths)

R = 10.6/2 = 5.3

24. D = 3.14/3.14 = 1

R = 3.14/2 = 1.57 or pi/2

Which statement best explains why this expression is equal to 86.21?

43 + tt + 43⋅86.21

Answers

Answer:

c

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

HELP ASAP PLEASEEEEE

Answers

Answer:

y=-3/2x+1

Step-by-step explanation:

-3/2 is the slope

1 is the y intercept

Your answer is y=-3/12x+1

What is the mean in statistics? HELP!

Answers

Answer:

add all your data and divide by n.

Step-by-step explanation:

example: 1,2,3 1+2+3=6. 6/3=2 the mean is 2.

Answer:

The mean is the average or the most common value in a collection of numbers. In statistics, it is a measure of central tendency of a probability distribution along median and mode. It is also referred to as an expected value.

Step-by-step explanation:

Mean is an essential concept in mathematics and statistics. The mean is the average or the most common value in a collection of numbers.

How to calculate mean?

There are different ways of measuring the central tendency of a set of values. There are multiple ways to calculate the mean. Here are the two most popular ones:

 

Arithmetic mean is the total of the sum of all values in a collection of numbers divided by the number of numbers in a collection. It is calculated in the following way:

Zachary traveled from city A to city B. He left city A at 7:30 a.m. and reached city B at 12 noon. Find his average speed if city B is 180 mi away from city A.


Please include the units after the answer!

Answers

Answer:

40 mph

Step-by-step explanation:

s = d/t

a to b's distance = 180 miles

7:30 - 12pm = 4.5 hours (time)

speed = 180 ÷ 4.5

speed = 40

40mph because it is 180 miles away and it took him 4.5 hours u divide 180 by 4,5

What is the middle of 1/2 and 3/4

Answers

Answer: Try 5/8

Step-by-step explanation: Because 1/2 and 3/4 can also be written as 4/8 and 6/8. And that's how I got 5/8.

Hi! I believe that I have the answer.

My answer: 5/8.

1/2 can also be put as 4/8. 3/4 can also be put as 6/8. Right in the middle of 4/8 and 6/8 is 5/8.

I hope that helps!

How do I multiply fractions by fractions? (Ex: 1/2 X 7/10)

Answers

Answer:

7/20

Step-by-step explanation:

Just multiply the numerators with each other and then multiply the denominators

If there are 23 students in your class, and your teacher is pulling random names from a hat, what is the probability that your name will be pulled on the third pull?
A) (1)/(23)
B) (3)/(23)
C) (3)/(21)
D) (1)/(21)

Answers

the answer for your question is A.

plz help me i beg i will give brainlist and 20 points
Jin tried to find the circumference of the circle. FIND HIS ERROR AND CORRECT IT.

Answers

Answer:

His error is that he calculated it as diameter not radius

Step-by-step explanation:

C=2πr

=2(3.14)(5)

=31.4mm

Please mark as brainliest if answer is right

Have a great day, be safe and healthy  

Thank u  

XD  

Please answer both questions. No links or I will report. Follow the directions.

Answers

answer:
6x - 30 = 84
x = 19

step-by-step explanation:
the equation would be
6x - 30 = 84
it would be minus because it was her expenses
to solve the equation
6x - 30 = 84
+30 +30
6x = 114
/6 /6
x = 19

I need help can you help

Answers

Answer:

Option 3, angle 2 is equal to 37 degrees

Step-by-step explanation:

Angle 2 is on the opposite side of the 37 degree angle, so it is also 37 degrees

Answer: Not enough information is given

Step-by-step explanation:

Data: Angle 4 is 37 degrees

Angle 1 is x degrees

Angle 2 is x degrees

Angle 3 is x degrees

It only shows us that the 1 and 3 or obtuse and 2 is acute

We don't know if the angles are Congruent so we cannot draw a conclusion about the size of any of the other angles

I hope this helps!

Help pldssshdhhfhfhtj

the distannce fromm bbaseee to base, incluudding homess platee, on a baaaaseballlll fiellllld is 90 ft. the bases form a square.

If ulu hit a home run, how farrrrr do you have to runnnn to touchhhhhhb all the bases and returnnnnnn to home plateeeeeee​

Answers

as far as you cann bbb

PLEASE HELP ME PLEASEEE!!

Answers

Answer:

1200

Step-by-step explanation:

78 ÷ 6.5 = 12 x 100

sales = 1200

It’s the green sister:))

The box plot below represents some data set. What percentage of the data values are greater than 42?

Answers

Answer:

25%

Step-by-step explanation:

MRK ME BRAINLIEST PLZZZZZZZZZZZZZZZ

Steve walks a circular trail at the local park that is 440 yards in length (a quarter mile). The city council has built a fountain at the center of the circle. To the nearest yard, what is the shortest distance from the path to the center of the fountain?

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Answers

Step-by-step explanation:

circumference of a circle is

u = 2 pi r

u=440

r=?

solve for r

Dylan makes 3 submarine sandwiches. He cuts each sandwich into sixths to share. He stacks all the sandwich pieces on a plate. How many sandwich pieces does Dylan stack on the plate? Make sure to include the equation you used to help you solve this problem in your answer.

Answers

Answer:

18

Step-by-step explanation:

Each sandwich will be divided into 6 pieces. 1 sandwich equals 6 pieces, 2 sandwiches equals 12 pieces, so 3 sandwiches equals 18 pieces.

Answer:

It will be 18

Step-by-step explanation:

All you have to do is simple multiplication, 6 times 3 and you get 18

3 sandwiches and 6 pieces each.

The attic is a triangular prism. Insulation will be placed inside all walls, not including the floor. Find the surface area covered by insulation.

Answers

Answer: This is from 2021.. still need this answer...?

Step-by-step explanation:

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