Mathematics Middle School

HELP ASAP PLZ

Jane has 38 marbles of the same shape and size in a box. The colors and amounts of the marbles are shown below:

•14 white marbles
•9 gray marbles
•15 blue marbles

Without looking in the box, Jane takes out a marble at random. She then replaces the marble and takes out another marble from the box. What is the probability that Jane takes out a gray marble in both draws?


9/38x8/37 =72/1406
9/38+8/37 =637/1406
9/38+9/38 =684/1444
9/38x9/38 =81/1444

Answers

Answer 1
9/38 x 9 /38 =81/144 both of the events are indepent
Answer 2

Answer:  

The correct option is D. 9/38x9/38 =81/1444

Step-by-step explanation:

Total number of marbles in the bag = 38

Number of white marbles in the bag = 14

Number of gray marbles in the bag = 9

Number of blue marbles in the bag = 15

We need to find the probability that Jane takes out a gray marble in both draws

[tex]\text{Probability that Jane draws gray marble in first draw = }\frac{9}{38}[/tex]

Given that : Then Jane replaces the marble for the second draw

[tex]\text{Probability that Jane draws gray marble in second draw = }\frac{9}{38}[/tex]

[tex]\text{Probability that Jane draws gray marble in both draws = }\frac{9}{38}\times \frac{9}{38}[/tex]

[tex]\text{Probability that Jane draws gray marble in both draws = }\frac{81}{1444}[/tex]

Therefore, The correct option is D. 9/38x9/38 =81/1444

Related Questions

graph y = 1/2 x - 3
PLS HELP !!!

Answers

Put the dot at 1/2 right and -3 down

-11.3 is rational or irrational ? explain? 0.083 and 2.1371938 to please if its not much to ask?

Answers

Ignore the - sign for now.   11.3   =   11.3        113
                                                         -------  = ----------
                                                             1             10

Since this is the ratio of two integers, 11.3 is rational.  So is 11.3.

                                                                             83
If you really mean   0.083, this is rational:  it is ---------
                                                                            1000

If y ou meant 0.083333333 ... , that's also rational:  1/12 is equivalent.

Alejandro and Pedro are riding their bike to school. After 1 mile, the are 5/8 of the way there. How much farther do they have to go?

Answers

The correct answer is 3/5th of a mile
1 / (5/8) = x / 1...1 mile to 5/8 = x miles to 1
cross multiply
5/8x = 1
x = 1 / (5/8)
x = 1 * 8/5
x = 8/5 or 1 3/5 miles...total distance

and if they already rode 1 mile.....(1 3/5 - 1) = 3/5 of a mile left to go <==

angle P and angle Q are supplementary. If angle P = 2x and angle Q = x-3, find X

Answers

2x+x-3=180
3x-3=180
3x=183
x=61

The angles P and Q are supplementary, meaning together they add up to 180 degrees. Based on the given expressions for these angles, solving for x yields x equals 61.

The given problem describes supplementary angles P and Q. Supplementary angles are two angles whose measures add up to 180 degrees. In this case, angle P is represented by 2x and angle Q is represented by x-3. The equation representing these supplementary angles is therefore 2x + (x - 3) = 180.

Combining similar terms, this equation simplifies to 3x - 3 = 180. To solve for x, add 3 to both sides obtaining 3x = 183. Finally, divide each side by 3 to find x = 61.

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the marching band is having a show to raise at least $1000 forntheir upcoming trip. Each adults is $6 and students $4. The auditorium has a maxium capacity of 200 people.

Answers

This question is incomplete. I assume that you are looking for the number of adults and students.

Let a = adult

Let s = student

6a + 4s = 1000...A
a + s = 200...B

We have a system of linear equations in two variables, the variables a and s.

You can select any variable of choice to represent the adults and students.

Solve equation B for a or s (your choice).

a + s = 200

Solve for a or s (your choice).

s = 200 - a

Plug into equation A to find the value of a.

6a + 4(200 - a) = 1000

6a + 800 - 4a = 1000

6a - 4a = 1000 - 800

2a = 200

a = 200/2

a = 100

There are 100 adults.

Plug a = 100 into EITHER equation A or B to find students.

a + s = 200

100 + s = 200

s = 200 - 100

s = 100

There are also 100 students.

Did you follow?

Write 2036017 in expanded form using exponents

Answers


2 × 10 to the 6th power + 0 × 10 to the 5th power + 3 × 10 to the 4th power + 6 × 10 to the 3rd power + 0 × 10 to the 2nd power + 1 × 10 to the 1st power + 7 × 10 to the 0 power

The value of 2036017 in expanded form using exponent is expressed as  (2 × 10⁶) + (3 × 10⁴) + ( 6 × 10³) + 10¹ + 7

Given the value 2036017, we are to express it in expanded form as shown:

2036017 = 2,000,000 + 30000 + 6000 + 10 + 7

Express each term as exponents

2,000,000 = 2 × 10⁶

30000 = 3 × 10⁴

6000 = 6 × 10³

10 = 10¹

Taking the sum of the exponents

2036017  = (2 × 10⁶) + (3 × 10⁴) + ( 6 × 10³) + 10¹ + 7

Hence the value of 2036017 in expanded form using exponent is expressed as  (2 × 10⁶) + (3 × 10⁴) + ( 6 × 10³) + 10¹ + 7

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4.5(8-x)+36=102-2.5(3x+24) show step by step how to solve please.

Answers

Distribute 4.5 to 8- x and distribute -2.5 to 3x-24 to get 36-4.5x+36+102-7.5x+60, then add like terms to get  3x=90
Simplifying 4.5(8 + -1x) + 36 = 102 + -2.5(3x + 24) (8 * 4.5 + -1x * 4.5) + 36 = 102 + -2.5(3x + 24) (36 + -4.5x) + 36 = 102 + -2.5(3x + 24) Reorder the terms: 36 + 36 + -4.5x = 102 + -2.5(3x + 24)

Combine like terms: 36 + 36 = 72 72 + -4.5x = 102 + -2.5(3x + 24)

Reorder the terms: 72 + -4.5x = 102 + -2.5(24 + 3x) 72 + -4.5x = 102 + (24 * -2.5 + 3x * -2.5) 72 + -4.5x = 102 + (-60 + -7.5x)

Combine like terms: 102 + -60 = 42 72 + -4.5x = 42 + -7.5x Solving 72 + -4.5x = 42 + -7.5x Solving for variable 'x'.

 Move all terms containing x to the left, all other terms to the right.

 Add '7.5x' to each side of the equation. 72 + -4.5x + 7.5x = 42 + -7.5x + 7.5x

Combine like terms: -4.5x + 7.5x = 3x 72 + 3x = 42 + -7.5x + 7.5x

Combine like terms: -7.5x + 7.5x = 0.0 72 + 3x = 42 + 0.0 72 + 3x = 42

Add '-72' to each side of the equation. 72 + -72 + 3x = 42 + -72

Combine like terms: 72 + -72 = 0 0 + 3x = 42 + -72 3x = 42 + -72

Combine like terms: 42 + -72 = -30 3x = -30

Divide each side by '3'. x = -10

Simplifying x = -10

Convert: 2°C to °F (to the nearest tenth).

Answers

Your answer is 35.6 degrees Fahrenheit.
OK, how you want to do this is:

1) Tf = 9/5(2) + 32
2) Tf = 3.6 + 32
3) Temperature of farenheit = 35.6

Jennifer uses the formula P = 0.5e - 5 to determine the profit (P) she makes from selling any number of erasers (e). Last week Jennifer had a profit of $63. How many erasers did Jennifer sell?

Answers

To find this answer we must plug in the values given and then rearrange the equation to solve for e (number of erasers). First we can rearrange the equation for e to get the following expression: (P + 5)/.5 = e . Now we just plug in the $63 profit for P and solve for e. Doing this we get: (63 + 5)/.5 = 68/.5 = 136. Jennifer sold 136 erasers.

Answer:

136

Step-by-step explanation:

did the interim (usatestprep)

Which doubles fact can help you solve 4+5

Answers

By doing the addends of 4+5 :)


(a − 6)2

Find the product. (Simplify your answer completely.)

Answers

Heyo!

(a - 6)2

Multiply each term in the parenthesis by 2

2a - 6 × 2

Multiply the numbers

Your answer is
2a - 12

(a - 6)2

I'm going to move the 2 onto the other side, because it's easier for me to visually do :)

2(a - 6)

Simplify.

(2 × a) + (2 × -6)

Simplify.

2a + -12

2a - 12

~Hope I helped!~

How do you write 26/10 as a percentage

Answers

26/10 as a percentage would be 260%.
The way we explain this is you multiply 26 * 10 and 10 * 10. You get 260/100.
260/ 100 as a percentage is 260%.

How long does it take each horse to run a mile

Answers

The correct answer is;

Horse A will take 4 minutes to run 1 miles, while horse B will take 2 minutes 30 seconds to run 1 mile.

Analysing the graph, the Distance is measured in miles, while the Time is measured in minutes.

For horse A, the time taken to run 1 miles is 4 minutes, according to the graph.

For horse B, the time taken to run 1 mile is 2 minutes 30 seconds according to the graph.

Therefore, according to the graph, it will take horse A and horse B, 4 minutes and 2 minutes 30 seconds respectively, to run a mile.

The table below shows the number of pencils of different colors in a box:


Color of Pencil Number
Purple 10
Blue 1
Yellow 6
Pink 3
Pam draws a color pencil from the box randomly without looking. What is the probability that Pam will select a yellow pencil and the coin will land tails up?
2 over 40
6 over 40
12 over 20
16 over 20

Answers

Answer:

6 over 40

Step-by-step explanation:

6/40 or 3/20  is the probability that Pam will select a yellow pencil and the coin will land tails up.

What is probability?

Probability is a number that expresses the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

Given that,  The table below shows the number of pencils of different colors in a box:

Color of Pencil        Number

Purple                         10

Blue                             1

Yellow                         6

Pink                             3

From the general formula of probability:

Probability = (desired outcome)/ (Total outcome)

In our case

Total outcomes = (number of pencils) * (coin sides)

Total outcomes = 20 * 2

Total outcomes = 40

Desired outcomes = Pam will select a yellow pencil and the coin will land tails up

Desired outcome = (number of yellow pencils) * (coin sides)

Desired outcome = 6 * 1 = 6

Thus,

Probability = 6/40

therefore, the probability that Pam will select a yellow pencil and the coin will land tails up is 6/40 or 3/20.

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Can you please help me with #7&8 thanks in advance

Answers

(3/5)(1/2)

Let B = fraction of the bulletin board
for Homeroom 101

B = (3/5)(1/2)

B = 3/10

Please explain how to do this

Answers

there will be an equal margin on either side of the picture. So two times the margin plus the width of the picture must equal the page width of 10.

so the margin will be (10-5 1/2)/2.

what is the value of the 2 in 54.625

Answers

200/1000. Hope this helps! Basically, 200 out one thousand. 
The value of the digit 2 in the number 54.625 is two hundredths.

−13−(−12)

A number line ranging from negative one to one with an arrow on both ends and tick marks every one third

−16
0
16
​12​

Answers

If the question you're asking is -13-(-12), then your answer would be -1. Hope that helped.

Answer:

Option C.

Step-by-step explanation:

The given expression is

[tex]-\frac{1}{3}-(-\frac{1}{2})[/tex]

We know that (-)(-)=(+). So, the given expression can be written as

[tex]-\frac{1}{3}+\frac{1}{2}[/tex]

Taking LCM we get

[tex]\frac{-2+3}{3\times 2}[/tex]

[tex]\frac{1}{6}[/tex]

The value of given expression is 1/6.

Two numbers are [tex]-\frac{1}{3}\text{ and }-\frac{1}{2}[/tex]. Mark these point on the given number number.

Now, move from [tex]-\frac{1}{2}[/tex] to [tex]-\frac{1}{3}[/tex] and count the number of jumps.

Number of jumps from [tex]-\frac{1}{2}[/tex] to [tex]-\frac{1}{3}[/tex] is 1.

1 Jump = 1/6

Therefore, the value of given expression is 1/6, therefore the correct option is C.

A flower shop received a total of 24 boxes of roses each box had red yellow and white roses there were 16 in each box the shop receive a total of 125 red roses and 112 yellow roses how many white rose to the shop receive

Answers

Your answer would be 147 white roses

It's 147 white roses

a circle with a 12 in diameter is folded in half and folded again whats the area of the resulting shape




PLEASE HELP!!!!!!1

Answers

9.42,  A = 3.14 (r to the power of 2) So it would equal 9.42

I need help with these 2 questions. I will give BRAINLIEST!!!
Number 1
TJ, Max, and Misha are all the same age. The sum of their ages is s years. How old was TJ eight years ago?

Number 2
Alex is 3 times as old as he was 2 years ago. How old is he now?
Thanks!!!!!

Answers

Alex is 15 for number 2 


I cannot find the answer for number 1 it isn't ringing a. bell

Ella and Margaret were at a carnival. They each got a ticket to the Ferris wheel. Ella got a snow cone, and Margaret got a cotton candy. Ella had a certificate for $6 off the cost. Margaret paid the rest, which came to $12.75. Each Ferris wheel ticket is $5. And a snow cone is $3.50. What was the cost of the cotton candy? A.$5.00 B.$5.25 C.$2.50 D.$7.25

Answers

the answer is B. $5.25

Answer:

B.$5.25

Explanation:

There were 2 tickets to the Ferris wheel; each is $5.  This can be written as 2(5).

Ella got a snow cone, which cost $3.50.  This gives us 2(5) + 3.50.

Margaret got a cotton candy, the cost being unknown; this gives us 2(5)+3.50+x.

Ella had a certificate for $6 off the cost; this gives us 2(5)+3.50+x-6.

This makes the equation

2(5)+3.50+x-6=12.75

Combining like terms, we have

7.50+x = 12.75

Subtract 7.50 from each side:

7.50+x-7.50 = 12.75 - 7.50

x = 5.25

Harvey needs to raise $400 he has 100 books to sell at $8.00 each what inequality shows this

Answers

If he sells all of the books he will end up with $800
8x ≥400

x ≥ 100

these are the inequalities you need, first find x, then plug x in to top inequality

hope this helps

HELP!!! ASAP
how would i write this into a conditional statement
3x-7=14 implies that 3x=21

Answers

If 3x-7=14, then 3x=21
Conditional Statements always have if-then
Hey, here is my genius answer for today, it's what the other person wrote. LOL, i'm back on right now, but yes, the other person is right, conditional statements always have if and then.

Evaluate log64 + 2log5 - 2log40

Answers

↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓

a line contains the points (82,-96) and (87,-86)
what is the sloped line is simplified form?

Answers

Slope formula: y2 - y1 ÷ x2 - x1
Let's label the points. (82[x1], -96[y1]) (87[x2], -86[y2])
-86 - -96 would turn into -86 + 96, coming out to 10. 
87 - 82 = 5.
10/5 would be the unsimplified slope.
Divide both numbers by 5, and you get 2/1.
2/1 simplifies to 2 because two divided by one equals two, as one can go into two twice.
Slope line in simlified form: 2

Answer:

2

Step-by-step explanation:

Which sentence illustrates the commutative property of addition?

Answers

The answer is: x+y+z= y+x+z. When using commutative property, the sum cannot be changed. Let's plug in our own numbers.

7+8+9=24 so 8+7+9 also equals 24. commutative property is just switching the order that the numbers appear in but in the end, still equals the same thing 

Carol’s car seats one third the number of people that Joan’s car can seat. Two people can be seated in Carol’s car. How many people can Joan’s car seat?

Answers

joan's car can seat 6 people

A package of 5 pairs of insulated gloves costs 29.45 what is the cost of a single glove?

Answers

5 pairs of gloves, two gloves per pair, so we have 10 gloves.
If the entire pack cost $29.45, we divide that by 10 to determine the cost of a single glove:

$29.45 ÷ 10 = $2.945 which rounds to $2.95 per glove.

Given that the package contains 5 pairs of gloves

Let us first establish some facts

We know that a pairs consist of 2 glovesIn all we have 10 gloves

Now let us solve for the cost of a glove

if 10 gloves cost 29.45

the 1 glove  will cost x

Cross multiply to solve for x

10*x = 1*29.45

divide both sides by 10

x = 29.45/10

x= 2.945

Hence the cost of a single glove is 2.945

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There are 2 rows of 8 chairs use the distributive property to solve

Answers

2(8) 2×8 =16 that is how u do it
I am not too sure about the question but  I think this is:
2(8)=?
8 x 2= 16.
 I hope this the answer to your question.
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