On a math test, 5 out of 20 students got an A. If three students are chosen at random without replacement, what is the probability that all three got an A on the test?

Answers

Answer 1

Answer:

5

Step-by-step explanation:


Related Questions

The side on a clip board appears to be a right triangle. The leg lengths are 2 millimeters and 2.1 millimeters and the hypotenuse is 2.9 millimeters. Is the side of the clip a right triangle?

Answers

Answer:

Yes, it is a right angle triangle

Step-by-step explanation:

Let leg lengths be y and z

Y = 2mm

Z = 2.1mm

Let x represent hypothenus

X = 2.9mm

To find out if it's a right angle triangle, we'll use pythagorean theorem since it's true for all right angle triangles I.e the square of the hypothenus is equal to the square of both sides(opposite and adjacent)

x² = y² + z²

x² = 2² + 2.1²

x² = 4 + 4.41

x² = 8.41

Take the square root of both sides

x = √(8.41)

x = 2.9mm

Therefore since the square of two other sides equal the square of the hypothenus, the side of the clip is a right angle triangle

Which is true about the data shown in the scatter plot?


A)
The data have no clusters and outliers.


B)
The data cluster along a line and there is no outlier.


C)
The data cluster along a curve and there is no outlier.


D)
The data cluster along a line. The point (10, 6) is an outlier.

Answers

Answer:

D.

Step-by-step explanation:

The line is going in positive linear association and the outlier is (10,6) because that is the coordinate farthest from the line.

Answer:

I would answer but that ain't enough points...

Step-by-step explanation:

Faith makes greeting cards with colored paper. She plans to make 15 of the cards out of red paper. She has 25 sheets of colored paper in all. If she uses all the colored paper she has, how many sheets are a color other than red?

Answers

Answer:

5

Step-by-step explanation:

because..............

Using fraction, the sheets are a color other than red is 5.

What is fraction?

Fraction is a "number are expressed as quotient, where numerator is divided by denominator".

According to the question,

Faith has 25 sheets of colored paper. She plans to make 15 of the cards out red paper.

[tex]\frac{15}{25}[/tex] =  [tex]\frac{3}{5}[/tex]

5 - 3 =2

Fraction 5 parts of sheets is equal to 25, 3 parts of sheet is equal to 15.

5 = 25

2 =  x

5 × 5 = 25

2 × 5  = 10

Hence, using fraction the number of sheets are a color other than red is 5.

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Without drawing the graph of the function y=1.2x−7, see if the graph passes through points: (100; 113)

Answers

Answer:

(100,113) is on the graph of y = 1.2x -7

Step-by-step explanation:

y=1.2x−7

Substitute the point in and see if the equation is true

113 = 1.2 (100) -7

113 =120 - 7

113 = 113

This is true, so the point is on the graph

15. You want to wrap a paperweight shaped like the
triangular prism shown. How many square inches
of wrapping paper do you need to completely
cover the prism?

Answers

Answer: 110

Step-by-step explanation: This is actually very simple. Al you have to do is to find the area of the 3 rectangles, which adds up to be 96, and find the area of the triangles, which adds up to be 14. You then have to add 96 and 14, which results in 110.

If t=(23 -38 17 -6), then what is -10(t)? I WILL GIVE BRAINLIEST

Answers

Answer:

B

Step-by-step explanation:

Multiply each term by -10

PLSSSSSSSSSSS HELP ME RQ

Answers

The answer is a because the person on top said

Answer:

they spent more on signs than on flower boxes

Step-by-step explanation:

2/9 = 16/72

5/8= 45/72

11/72

You just bought ten trees and want to plant them in 5 rows with 4 trees in each row. How will you plant the trees?


Answers

Answer:

You can't you have to use 20 trees since 20 divided  by 5 is 4.

So using 10 would make it 10 divided by 5 which is 2.

And the trees can't be halve so it's 20. 10 is impossible.

Step-by-step explanation:

Imagine you have a piece of string. Imagine cutting the string in half, and noting the measure of the piece. If you repeat this process until you cannot cut anymore string in half, what do you suppose happens to the measurement of the strings as the number of pieces rises?

Answers

Answer:

The string disapears and the measurment decreaces int tiny bits as to it getting cut into tiny pieces.  

If this was not correct or the answer you were looking for tell me what you think.

Martha has 27 quilt patches with animals and
27 patches with flowers. She wants her quilt
to have rows of 6 patches. How many rows
will the quilt have?

Answers

She will make 9 rows because 27 + 27 = 54 and divided by 6 =9

Write a variable expression for each. Tell what the variable represents I NEED HELP!!!

1. $16 less than last week's income
2. 5ft longer than the width of the wall
3. The amount of a car loan separated into 48 equal payments

Answers

1. x - 16
2. x + 5
3. x divided by 48 (I don’t have the division symbol.)

The top 25% of students like between _ and _ photos per day (it’s not 30 and 50)

Answers

Answer:

100 and 125

Step-by-step explanation:

Find the angle represented by x (rounded to the nearest tenth of a degree). A) 32.6° B) 36.4° C) 37.8° D) 38.7°

Answers

Answer:

The angle is 49.63°, approximately.

Step-by-step explanation:

In the image attached, you can observe that the angle we need to find is an acute angle of a right triangle, where its hypothenuse is 21 units long and its opposite leg is 16 units long.

Having these elements, we can use the sine trigonometric reason to find the angle.

[tex]sin(x)=\frac{opposite \ leg}{hypothenuse} =\frac{16}{21}\\ x=sin^{-1}(\frac{16}{21} ) \approx 49.63\°[/tex]

Therefore, the angle is 49.63°, approximately.

bro please help meee

Answers

Answer:

504 in³

Step-by-step explanation:

First find the volume of the large rectangle, which is 576 in³

Then find the volume of the small rectangle, which is 72 in³

Then subtract 72 from 576 = 504

solve this equation 5x+17= 42

Answers

Answer:

x = 5

Step-by-step explanation:

5x + 17 = 42

5x = 25

x = 5

Answer:

x = 5

Step-by-step explanation:

5x+17= 42

Subtract 17 from each side

5x+17-17= 42-17

5x = 25

Divide each side by 5

5x/5 = 25/5

x = 5

Which is the correct calculation for the volume of the prism?

A prism has a length of 8 millimeters, height of 2 and one-half millimeters, and width of 8 and one-half millimeters.

2 and one-half + 8 + 8 and one-half = 19 mm3
2 and one-half times 8 + 8 and one-half = 28.5 mm3
8 times 8 and one-half = 68 mm3
2 and one-half times 8 times 8 and one-half = 170 mm3

Answers

Answer:

its D

Step-by-step explanation:

The correct calculation for the volume of the prism is 2 and one-half times 8 times 8 and one-half = 170 mm3

What is a volume?

Volume is defined as the space occupied by any object in the three-Dimensions. All three parameters are required for the volume like length, width and height of cube or cubes.

The volume will be calculated as:-

V   =   L  x  W  x  H

V   =  [tex]2\dfrac{1}2}[/tex]  x  8   x  [tex]8\dfrac{1}{2}[/tex]

V   =  ( 5/2)  x  8   x  ( 17/2 )

V   =  170 mm³

Therefore correct calculation for the volume of the prism is 2 and one-half times 8 times 8 and one-half = 170 mm3

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All of the guests at a school dance choose one option for their dinner - rice and chicken, the pizza, or pasta. 45% of the guests chose the rice and chicken
option. 260 guests chose the pizza option. 25% of the guests chose the pasta option. How many guests chose rice and chicken as their dinner option?

Answers

390

Step by step:

45% chose rice and chicken and 25% chose pasta. So that means 30% chose pizza option.

If 30% is equal to 260 then 45% would be 260/30*45=390

HELP QUICK I DON'T WANNA FAIL PLZ HELP!!!!

Answers

163 is incorrect the correct answer is 154

What is the equation of the line that is parallel to the given
line and has an x-intercept of -3?
O y = 2/3x+3
O y=2/3x+2
O y=-3/2x+3
O y=-3/2x+2

Answers

Answer:

0y=2/3x+2

Step-by-step explanation:

0y=2/3x+2 (multiply the #s)

0 =2/3x+2 (move the expression to the left)

= -2/3x=2(multiply both sides by -3/2)

x=-3 (Solution)

hi,I hope ds helps

Two objects that are the same shape but not the same size are?

Answers

Answer:

Similar

Step-by-step explanation:

Objects that have the same shape but not size are defined to be similar.

Objects with the same shape and size are defined as congruent.

Anything that is congruent is ALSO similar.

Answer:

Similar

Step-by-step explanation:

Two angles are congruent if they have the same measure. Two figures are similar if they have the same shape but not necessarily the same size. All of the figures below are congruent since they all have the same shape and size.

Which system of equations can be used to find the roots of the equation 12 x cubed minus 5 x = 2 x squared + x + 6? StartLayout Enlarged left-brace 1st Row y = 12 x cubed minus 5 x 2nd row y = 2 x squared + x + 6 EndLayout StartLayout Enlarged left-brace 1st Row y = 12 x cubed minus 5 x + 6 2nd row y = 2 x squared + x EndLayout StartLayout Enlarged left-brace 1st Row y = 12 x cubed + 2 x squared minus 4 x 2nd row y = 6 EndLayout StartLayout Enlarged left-brace 1st Row y = 12 x cubed + 2 x squared minus 4 x + 6 2nd row y = 0 EndLayout

Answers

Answer:

A

Step-by-step explanation:

12x³-5x=2x²+x+6

y=12x³-5x

y=2x²+x+6

A system of equations is a collection of related equations

The system of equations that can be used to solve [tex]12x^3 - 5x = 2x ^2 + x + 6[/tex] [tex]y = 2x ^2 + x + 6[/tex] and [tex]y= 12x^3 - 5x[/tex]

The equation is given as:

[tex]12x^3 - 5x = 2x ^2 + x + 6[/tex]

Split the above equation into 2, and set both equations to 0

[tex]12x^3 - 5x = 0[/tex]

[tex]2x ^2 + x + 6 = 0[/tex]

Replace the "0" with y, in both equations

[tex]12x^3 - 5x = y[/tex]

[tex]2x ^2 + x + 6 = y[/tex]

Rewrite the equations as:

[tex]y = 2x ^2 + x + 6[/tex]

[tex]y= 12x^3 - 5x[/tex]

Hence, [tex]y = 2x ^2 + x + 6[/tex] and [tex]y= 12x^3 - 5x[/tex] can be used to solve [tex]12x^3 - 5x = 2x ^2 + x + 6[/tex]

Read more about system of equations at:

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I'M SO STUPID
SO PLEASE HELP YA GIRL OUT

Answers

123 is a linear pair with the inside angle so
180-124= 57. Now we have two inside angles and a triangle has to be 180 degrees so
57+42=99 we know that both angles equals 99 so
180-99=80. The third angle is 81 and is a linear pair with x soooo
180-81=99
X is equal to 99. You can also do corresponding angles and have X be 99 because of the inside angle that’s also 99

Answer:

IDK IM SORRY

Step-by-step explanation:

IM DUMB

Which shows all the names that apply to the figure?


parallelogram

parallelogram, rhombus

parallelogram, rectangle

parallelogram, rhombus, rectangle, square

Answers

。☆✼★ ━━━━━━━━━━━━━━  ☾  

I believe it would be A. parallelogram.

It can't be a rhombus as all its sides aren't equal

It can't be a square for the same reason ^

It can't be a rectangle as it does not have angles of 90 degrees

Have A Nice Day ❤    

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Answer:

i believe its all 4.

Step-by-step explanation:

if you cut the parallelogram in half you get square but if its on its side.

if you slightly turn the square you ill see a rhombus.

and it could be a rectangle as well.

Johnny claims that a horizontal line had no slope. is he correct? Why or why not.

Answers

Yes he is correct because a horizontal line goes straight across

Could u help me make sure its the right answer i can't get this wrong .

Answers

Answer:

12x + 6y = 102

5x - 6y = 34

17x = 136

x = 8

y = 1

Answer:

Step-by-step explanation:

Next time just substitute each of the options for x and y one at a time.

A

If Jay gets paid $125 for working 10 hours, how much does he get paid for one hour?

Answers

125 dollars divided by ten = 12,5
He gets paid 12,5$ for one hour

Answer:

12.5

Step-by-step explanation:

125/10=Hour

Hour-12.5

Check,

12.5*10=$125

Jack’s bank statement shows an account balance of –$25.50. Which describes the magnitude, or size, of the debt in dollars? $50.50 $25.50 $0 –$25.50

Answers

Answer:

$25.50

Step-by-step explanation:

because the magnitude of the debt is the distance from zero.

Answer:

25.50

Step-by-step explanation:

For what value of x the relation S: {(x2+3,4), (5,2)} is not a function?

Answers

Answer:

x =  ±sqrt(2)

Step-by-step explanation:

It is not a function if the same input goes to 2 different  outputs

x^2 +3 =5  would cause the same input to go to 2 different outputs

Subtract 3 from each side

x^2 +3-3 =5-3

x^2 = 2

Take the square root of each side

sqrt(x^2) = ±sqrt(2)

x =  ±sqrt(2)

Answer:

x = sqrt(2), -sqrt(2)

Step-by-step explanation:

For a function, there cannot be multiple outputs for the same input, therefore x²+3 should not be 5

x² + 3 = 5

x² = 2

x = +/- sqrt(2)

plus help me asap thank you​ the first answer choices are 8 5 4 and 2 the second answer choices are 2 5 4 8 and then the third ones are greater than equal to less than and then the last one is equal to greater than or less than

Answers

Answer:

2

5

less than

<

Step-by-step explanation:

gotchu fam

Which of the following pairs of triangles can be proven congruent through SSS?

Answers

Answer:

B

Step-by-step explanation:

In figure C) segment AB is similar to segment DF, segment BC is similar to segment EF, and segment AC is similar to segment DE. So, both the triangles are congruent by SSS similarity.

Check all the options in order to determine the correct pairs of triangles can be proven congruent through SSS.

A) According to the given figure, segment AB is similar to segment XY and segment YZ. Also, segment AC is similar to segment XZ.

Therefore, this option is incorrect.

B) According to the given figure, angle A is congruent to angle X, angle B is congruent to angle Y, and angle C is congruent to angle Z. So, both the triangles are congruent by AAA similarity.

Therefore, this option is incorrect.

C) According to the given figure, segment AB is similar to segment DF, segment BC is similar to segment EF, and segment AC is similar to segment DE. So, both the triangles are congruent by SSS similarity.

Therefore, this option is correct.

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