Mathematics Middle School

On a math test, 4 out of 20 students received an A. Two students are randomly selected without replacement, and the first student has an A. What is the probability of the second student having an A?

Answers

Answer 1

Answer:

Step-by-step explanation:

The answer should be 20% chance

Answer 2

Two students selected without replacement, and the first student and second student having is 16/95

Probability-based problem:

What information do we have?

Number of total students = 20

Number of students having A = 4

Two students selected without replacement, and the first student has an A = 4/20 × 16/19

Two students selected without replacement, and the first student has an A = 64 / 380

Two students selected without replacement, and the first student has an A = 16 / 95

Probability of the second student having an A = 16/20 × 4/19

Probability of the second student having an A = 64 / 380

Probability of the second student having an A = 16 / 35

Find out more information about 'Probability'.

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Related Questions

help me in these im stuck in all the question plz and ty and ill give u 50pt on my next question

Answers

Answer:

1. $1.07 of each sponge

2. 25% prefer sprite  

3. i don't know that one, i'm sorry.

4. 25.65    (that one u can use a calculator)

does this help??

Number 1 is 1.07 number 2 is 25% prefer sprite number 3 is 1< 16,6<16,10<16 number 4 is 25.65 (btw I’m not sure if these are completely correct but these would be my answer if I were in your situation

Mrs. Nichols takes the trash out every Monday and mows her lawn every 4 days. If she does both activities this Monday, how many days later will she do both activities on the same day again?

Answers

Answer:

fftd

Step-by-step explanation:

It would take week and a couple of days.

Find the area of the rectangle. Show your work and answer in the space below

Answers

Answer:

99/10= 9.9

Step-by-step explanation:

2 2/5 x 4 1/8 = 9 9/10 = 99/10

Answer:
9.9 or 99/10 or 9 9/10

Step by Step Explanation:
4 1/8 x 2 2/5 = 9.9 = 9 9/10 = 99/10

PLSSS HELP I'M DEAD

Larry’s pet store made $30 before a pipe burst and he had to close early to get it fixed. He realized that he lost Three-fourths of a dollar each hour that the store was closed. If the expression that models this situation is 30 Negative three-fourths x, what is Larry’s profit if the store was closed for 8 hours?

Answers

Answer:

$24

Step-by-step explanation:

You will plug in 8 for x :)

30 - (3/4)x

Since he loses 3/4 a dollar for every hour he can't work, (3/4) x 8 = 6.  He will lose 6 dollars from this. 30 - 6 = 24.

His final profit is 24.

The awnser is $24 plz mark thanks so I can get more points plz

Simplify the expression: 4x+2+12x+17

Answers

4x + 2 + 12x + 17

= 4x + 12x + 2 + 17

= 16x + 19

Answer:

[tex]4x + 2 + 12x + 17 \\ = (4 + 12)x + (2 + 17) \\ = 16x + 19[/tex]

A reporter determines a baseball player betting average which is a ratio of numbers of hits to number of times at bar the result is shown on a calculator as 0.2121....

write this repeating decimal as a fraction

the fraction is .......​

Answers

Answer:

2121/10000

hope this helps

Step-by-step explanation:

3) James has four identical cylinders filled with water. How many cones should he be able to fill with the water if the cones have the same radius and the same height as the cylinders? Explain.
10 points
A. 3 cones
B. 4 cones
C. 9 cones
D. 12 cones

Answers

Answer:

║∦║Hello Person║∦║Your answer should be:C. 9 Cones

Step-by-step explanation:

I hope this helped!

Brainliest would be appreciated!

Have a great day!

If it takes a cheetah 3 hr. to run 135 mi. over flat ground, how fast is it running?

A. 40 mph
B. 45 mph
C. 50 mph
D. 55 mph

Answers

Answer:

C: 45 mph

All I did was divide 3 and 135 to get the answer

Answer:

45 mph

Step-by-step explanation:

Take 3 hours (180 mins) and subtract the 135 miles ran to get 45. So the Cheetah ran 45mph.

Hope this helps luv <3

1) What is d
ugydfiysdkhd

Answers

-72 bro, you have to get rid of the -6 by multiplying it so it cancels out and whatever you do to one side you do to another so 12 times -6 equal -72. D=-72 you can check it by plugging it in

A weir is used to measure water flow in a channel. For a rectangular broad crested weir, the flow Q in cubic feet per second is related to the weir length L in feet and height H of the water by Q = 1.6LH3/2. Find the water height for a weir that is 3 feet long and has a flow of 38.4 cubic feet per second.

Answers

Answer:Find the water height for a weir that is 3 feet long and has flow of 38.4 cubic feet per second. SOLUTION: Therefore, the water height for the weir is 4 feet.

Answer:

the water height for the weir is 4 feet.

Step-by-step explanation:

There are 3 trucks for every 4 cars in a parking lot. How many trucks and cars could be in the parking lot?
A.
67 trucks and 100 cars

B.
82 trucks and 83 cars

C.
72 trucks and 96 cars

D.
100 trucks and 125 cars

Answers

Answer:

c because 19 times 4 is 96 and 19 times 3 is 72

Answer:  The answer is C

Step-by-step explanation:

C

It takes Dennis 3 times as long as Vicki to read the paper each day. If it takes Dennis 36 minutes to read the paper, write and solve an equation to find how long it takes Vicki to read the paper.

Step 1: Define a variable to represent what you are solving for
Let ...

Step 2: Write an equation
Equation:

Step 3: Solve the equation using inverse operations
Solution:

Step 4: Write your answer sentence
Answer:

Answers

Answer:

Vicki takes 12 minutes.

Step-by-step explanation:

Call the time that Dennis takes to read; D

The time that Vicki takes to read is; V

As per the question;

Dennis takes 3 times as long as Vicki takes to read a paper, hence the equation formed is;

D = 3V

It is given that Dennis takes 36 minutes to read, hence

36 = 3V

Solve with inverse operations;

36 = 3V

/3       /3

12 = V

Answer:

Step-by-step explanation:

3x36=108

what is the full answer to, x to the power of 2 (x to the power of 5)?

Answers

Answer:

x^7

Step-by-step explanation:

I believe you want the product (x^2)(x^5).  The base (x) stays the same; the exponent of the product shown is the sum of 2 and 5:

x^(2 + 5) = x^7

Zxczxczxczxczxczxczxxccvvbbnmzzxxczzxcczzxxczzxcczxxczxxczxxc

Can you please help me, It will mean a lot!

Answers

Answer:B and E

Step-by-step explanation:because the circle is on -5 and it toward right side and has line under inequality sign.

I'm pretty sure that answer is B

Hope this helps

Drag the cards to create a number that matches these rules.
The number ends in the tenths place.
20 is the nearest ten when rounding numbers(4,1,6)

Answers

2x 5$unwnnnwwdww hey hye Ed

Reagan is picking out fabric for her bedroom. She has 14 fabric samples, and 4 of them are striped.

What is the probability that a randomly selected fabric sample will be striped?

Write your answer as a fraction or whole number.

Answers

You should divide 14/4 which would get you 3.5. Multiply the 3.5 by 10 to get your answer. (35)

Answer:

There is a 4 in 14 chance/ 4/14

Step-by-step explanation

4 pieces of 14 pieces of fabric are striped so there is a 4 in 14 chance she will pull out a striped piece of fabric.

help plz :))))))))))))))))))))))

Answers

Answer:

(1 3 5 7 9 )

Step-by-step explanation:

_8 _5 _2 this is the answer

Please Help !!!!!!!!!!!
the second choices are $4, $6, $8, $32

Answers

Answer would be 8, 4

Answer:

$6

Step-by-step explanation:

please help meeeeeeeeeeeeeeee

Answers

Answer:

number 2 is true

Step-by-step explanation:

Of the teacups in Whitney's Tea Shop, 2/5 are purple and another 1/10 are white. What fraction of the teacups are either purple or white?

a. 3/10
b. 1/2
c. 5/15
d. 2/5

Answers

1/2
2/5 is 4/10, and 1/10 makes 5/10, which is 1/2

Answer:

1/2

Step-by-step explanation:

its 1/2 because 2/5 is the same as 4/10 and 4/10 + 1/10 = 5/10 which equals 1/2.

6/7 Find the slope of the line.

Answers

The slope, if you have a graph, is the angle the line is going down so look at this graph:
m=0? i would need to see a picture

Can someone really help me on this ill give brainliest to the first answer

Answers

Answer:

38/z

Step-by-step explanation:

Key skills: Fractions, Division, Variables

1) 38 is being divided by a variable known as z.

2) 38 being divided by z would be the same as 38/z

Have a nice day! Hope you understood!

Answer:

38÷z

Step-by-step explanation:

I think that is right so sorry if not

which one is it is it a b c or d

Answers

The answer is D. B has the number 3 has the first numbers so that’s not it. C has the number 4 has the first numbers so thats not it. D is the only one that have different numbers in first numbers in the order (5, 8, 9)

Answer:

D

Step-by-step explanation:

the x (first number in the ordered pair) cant match with another x

in every other line, the x repeats which makes the function thing make a diagonal line instead. **khan academy explains it well btw**

I dont know how to do thisss stufff so um help plz :]

Answers

Answer:

bro just count the squares and how many there are that is the percentage

Answer:

36%

Step-by-step explanation:

36 squares are faded

Pretty easy math question

-4/7 x (-5)

make sure final answer is in simplest form.

Answers

The answer is 20/7 in improper fraction to make into the simplest form you need to change it into a mixed fraction it would turn out to be 2 6/7

identify the rate of change (slope) in the table below.

Answers

-5
remember rise over run.

which is the smallest?
-1 or -1/2

Answers

Answer:

-1 as minus one whole is less than minus 0.5

Step-by-step explanation:

Answer:

-1

Step-by-step explanation:

-1/2 equals -0.5 which is closer to 0 than -1

For negative numbers, the number closest to 0 is the bigger number thus resulting in -1 being less than -1/2.

Please help me I have to have it done today!
Correct answers please because this is a big part of my grade but i don't understand!

Answers

Answer:

I couldn't figure out the very first one at the very top, but here are the rest

Step-by-step explanation:

The first one is No, because  f one equation has subtraction, and the other has addition, your going to come out with different outputs. Then number 3 is 372.43. and the last one is 46 - 2.5 which equals 43.5

Answer:

I couldn't figure out the very first one at the very top, but here are the rest

Step-by-step explanation:

The first one is No, because  f one equation has subtraction, and the other has addition, your going to come out with different outputs. Then number 3 is 372.43. and the last one is 46 - 2.5 which equals 43.5

PLZ HELP QUICK! I NEED HELP PLZ

Answers

Answer:

x=5

Step-by-step explanation:

ok i got you.

your answer is x=5 dont ask how bc i used m.ath.way

Your answer is X=5 on the photo it says x=-5 but you have to change the sign so therefore x=5

help me with this please!!!

Answers

Answer:15

Step-by-step explanation: since it’s 4 to3 and if you multiply 4 and 5 you get 20 so you multiply 3 and 5 to get 15. Hope it helps!

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