There are 21 students in your class. The teacher wants to send 4 students to the
library each day. The teacher will choose the students to go to the library at random
each day for the first four days from the list of students who have not already gone.
What is the probability you will be chosen to go on the first day? State the answer as
a fraction.

Answers

Answer 1

Answer:

4/21

Step-by-step explanation:

since we are only talking about the first day, there are still 21 options for your teachers. there are 4 spots that you can fill, so the probability that you will be picked is 4/21

Answer 2

The probability you will be chosen to go on the first day would be; 4/21

What is the probability?

Probability refers to a possibility that deals with the occurrence of random events.

The probability of all the events occurring need to be 1.

The formula of probability is defined as the ratio of a number of favorable outcomes to the total number of outcomes.

We are given that there are 21 students in your class. The teacher wants to send 4 students to the library each day.

Since we are only talking about the first day, there are still 21 options for your teachers.

As we can see that there are 4 spots that you can fill, so the probability that you will be picked is;

4/21

Learn more about probability here;

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Related Questions

Reagan grew 30 plants with 6 seed packets. With 7 seed packets, how many total plants can
Reagan have in her backyard? Assume the relationship is directly proportional.
plants
Submit

Answers

Answer:

35

Step-by-step explanation:

6 x 5 = 30

We can assume each seed packet has 5 seeds

6 x 7 = 35

A number is 9 more than another number. Twice the sum of the two numbers is 10. Find the two numbers.

Answers

Step-by-step explanation:

the formula can be;

X+9x=10

10x=10X=10/10=1

X=1+9(1)=1+9=10 Answer

Jamie's company prepares a gift bag for each seat at an awards ceremony. The theater has 30 sections, each with 70 seats. Gift bags for 5 sections will have concert tickets. The rest of the gift bags will have coupons. How many gift bags will have coupons?

Answers

Answer:

Step-by-step explanation:

30(total num of sections)-5(amount of sections with concert ticket)=25

25x70(seats per section)=1750

1750 will get coupons

(you  dont  need the bits in brackets tehy are there to just explain so you know whay and why im  doind a calculation)      

Hence, the bags will get coupons are [tex]1750[/tex].

What is the simplification?

Simplification is reducing the expression/fraction/problem in a simpler form. It makes the problem easy with calculations and solving.

Here given that,

Jamie's company prepares a gift bag for each seat at an awards ceremony. The theater has [tex]30[/tex] sections, each with [tex]70[/tex] seats. Gift bags for [tex]5[/tex] sections will have concert tickets. The rest of the gift bags will have coupons.

Total number of sections are [tex]30[/tex]

Amount of sections with concert tickets are [tex]5[/tex]

So,the gift bags will have coupons is

[tex]30-5=25[/tex]

As each sections has [tex]70[/tex] seats so,

[tex]25[/tex] x [tex]70[/tex] [tex]=1750[/tex]

Hence, the bags will get coupons are [tex]1750[/tex].

To know more about the simplification

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Please help me with this

Answers

Answer:

i cant see it...

Step-by-step explanation:

...

find the value of given expression

=》
[tex]32 + 32 \div 32[/tex]

Answers

Answer:

32+32÷32=32+1=33 is your answer

Brian ate 2/3 of a pizza. His friend, Joseph ate 1/4 of what was left. How much pizza did joseph eat?

Answers

Answer:

[tex]\frac{1}{12}[/tex]

Step-by-step explanation:

[tex]\frac{2}{3}[/tex] = [tex]\frac{8}{12}[/tex]

[tex]\frac{12}{12}[/tex] - [tex]\frac{8}{12}[/tex] = [tex]\frac{4}{12}[/tex]

[tex]\frac{4}{12}[/tex] * [tex]\frac{1}{4}[/tex] = [tex]\frac{4}{48}[/tex] = [tex]\frac{1}{12}[/tex]

Multiply. Reduce if possible, if you can simplify, what is the GCF you used ? what is 3/7 x 2/4

Answers

Answer:

3/14

Step-by-step explanation:

Which fraction is equivalent to
-(7/8)?

Answers

Answer:

35/40

I think that’s what you mean? Hope this helped

Step-by-step explanation:

If a number is increased by 4, its square is increased by 64. Find the number

Answers

Answer:

12

Step-by-step explanation:

12 - 4 = 8

The square of 8 is 64

Answer:

6

Step-by-step explanation:

(n + 4)^2 = n^2 + 64

n^2 + 8n + 16 = n^2 + 64

8n = 48

n = 6

A cat can eat 1/2 of a bag of food in 3/4 of a month. How much food can the cat eat in 1 month

Answers

Answer:

the cat can eat 1 1/4 bag of cat food n 1 month

Step-by-step explanation:

brainliest plz

Simplify The following Expression:

45 + (x - 12)​

Answers

Answer:

The answer is x + 33

Step-by-step explanation:

1) Remove parentheses.

[tex]45 + x - 12[/tex]

2) Collect like terms.

[tex]x + (45 - 12)[/tex]

3) Simplify.

[tex]x + 33[/tex]

Therefor, the answer is x + 33.

Answer:

x+33 is your answer

Step-by-step explanation:

45 + (x - 12)

45+x-12

x+45-12

x+33

Solve for the measure of c. Round decimals to the nearest tenth.

A. 3.7
B. 7
C. 8.8
D. 4.7

Answers

Do you know the answer to this mate ?

Sam borrows from the bank $12,000 to buy a car paying in simple interest $ 2,844 per year. Sam paid the loan in 3 years, what is the annual interest rate on the loan?

Answers

Answer:

3,468

Step-by-step explanation:

i multiplied 2,844 by 3 and got 8,532 i then subtracted that from 12,000 and got 3,468

pls help! will mark brainliest if correct

Answers

(-2,6) should be the correct answer

Answer:

[tex]x = -2, y = 6[/tex]

Step-by-step explanation:

[tex]-x + 4 = -4x-2[/tex]

[tex]x = -2[/tex]

Plug back into either one of the equations to get y  = 6

need help so bad pleasss

Answers

Answer:

y=2/3x-6

Step-by-step explanation:

i hope this helps :)

Find all the missing sides and angles (picture attached)

Answers

Answer:

[tex]\boxed{x=73.74}[/tex]

[tex]\boxed{y=16.26}[/tex]

[tex]\boxed{z=25}[/tex]

Step-by-step explanation:

Hello there!

Algebra 1

The first thing we should find is the missing angle

Because this is a right triangle we can solve it using the Pythagorean Theorem

The Pythagorean theorem states that the sum of the two legs squared equal the hypotenuse squared

the formula... [tex]a^2+b^2=c^2[/tex] where a and b = legs and c = hypotenuse

we are given two legs so we plug in a and b and solve for c

[tex]7^2+24^2=c^2\\7^2=49\\24^2=576\\576+49=625\\625=c^2\\\sqrt{c^2} =c\\\sqrt{625} =25\\c=25[/tex]

so we can conclude that the missing side length ( or z) equals 25

now to solve for the angles

Trigonometry

We can solve for y using sin

sin = opposite side divided by the hypotenuse

the opposite of y is 7 and the hypotenuse is 25

so we set up an equation [tex]sin(y)=\frac{7}{25}[/tex]

now we solve for y

[tex]\frac{7}{28} =.28\\arcsin(y)=y\\arcsin(.28)=16.26020471[/tex]

then we round to the nearest hundredth

so we can conclude that angle labeled y = 16.26

basic geometry

Remember all of the angles in a triangle add up to equal 180 so we can find x by subtract the known angles from 180

180 - 90 - 16.26 = 73.74 so we can conclude that x = 73.74

A picture is 5 inches wide and 8 inches tall:

A rectangle is shown. The length of the rectangle is labeled 5 inches. The width of the rectangle is labeled 8 inches.

A photographer wants to use a scale factor of 2.5 to enlarge a picture. What will the area of the picture be after it is enlarged?

Answers

Answer:

area = 250 in²

Step-by-step explanation:

5 x 2.5 = 12.5 in

8 x 2.5 = 20 in

area = 20 x 12.5 = 250 in²


There are 4 consecutive even integers that add up to 268. Which integers are they?

Answers

Answer:

4n+ 12 = -268, or 4n = -280, or n = -70. This would imply that the four consecutive ODD integers are -70, -68, -66, -64.

Step-by-step explanation:

Hope this helps         :)

Help plz ASAP nowwwwwwww

Answers

Answer:

y = -3/4x + 5/4

Step-by-step explanation:

Points: (7, -4) and ( -1, 2)

Slope:

m=(y2-y1)/(x2-x1)

m=(2+4)/(-1-7)

m=6/(-8)

m= -3/4

Slope-intercept:

y - y1 = m(x - x1)

y + 4 = -3/4(x - 7)

y + 4 = -3/4x + 21/4

y = -3/4x + 5/4

Answer:

y = -3/4x + 5/4

Step-by-step explanation:

Hope this helps

Please help! 18/20. Will give brainliest! Spam answers will not be tolerated!
Factor. [tex]2x^5-7x^3-4x[/tex]

Answers

[tex]{ \sf{ \: factorise \: \: \: { \underline{ \green{2 {x}^{5} - 7 {x}^{3} - 4x}}}}} \\ \\ { \dashrightarrow{ \blue{ \sf{taking \: x \: common}}}}[/tex]

[tex]{ \leadsto{ \sf{ \green{ \:x(2 {x}^{4} - 7 {x}^{2} - 4)}}}} \\ \\ { \dashrightarrow{ \sf{ \blue{let \: {x}^{2} be \: equal \: to \: a}}}} \\ \\ { \leadsto{ \sf{ \green{ \: x( 2{a}^{2} - 7a - 4)}}}}[/tex]

[tex]{ \leadsto{ \sf{ \green{x(2 {a}^{2} - (8a \: - a) - 4}}}} \\ \\ { \leadsto{ \sf{ \green{x(2 {a}^{2} - 8a + a - 4)}}}} \\ \\ { \leadsto{ \sf{ \green{x(2a(a - 4) + 1(a - 4))}}}}[/tex]

[tex]{ \leadsto{ \sf{ \green{x(2a + 1)(a - 4)}}}} \\ \\ { \sf{ \: now \: putting \: the \: value \: of \: a}}[/tex]

[tex]{ \leadsto{ \green{ \sf{x(2 {x}^{2} + 1)( {x}^{2} - 4)}}}} \\ \\ { \leadsto{ \green{ \sf{ x( {x}^{2} + 1)( {x}^{2} - {2}^{2} )}}}} \\ \\ { \leadsto{ \green{ \sf{x( {x}^{2} + 1)(x + 2)(x - 2)}}}}[/tex]

After tax and tip,the bill totaled $63.00. What was each persons share? Show your work

Answers

How many people we’re dining together?

Write the third missing congruent statement that will allow us to prove the triangles congruent by SAS.

Answers

Answer:

LOOK AT YOUR ANSWER IN PICTURE

Parallel lines and tranvsveral

Answers

Answer:

angle 6=54*

Step-by-step explanation:

Transversal lines/alternate angles theorem

What is the value of X?

A. 6
B. 6√3
C. 12
D. 12√3

Answers

Answer:

B

Step-by-step explanation:

sin60°=x/12

⇒x= 6√3

describe what congruent figures and similar figures have in common

Answers

Answer:

Congruent figures have the same measurements in angles (degrees) and sides (units).

Similar figures are figures that have the same general shape and don't necessarily have to have the same size or measurements.

Something they have in common are corresponding angles and corresponding sides.

I hope someone knows.

Answers

Answer:

x = 9

Step-by-step explanation:

This is a 45-45-90 right triangle so the sides are in the ratio x: x: [tex]x\sqrt{2}[/tex]

It takes Carol 30 minutes to drive to work using two roads. She drives 24 mph on a small road for hour. Then she drives 56 mph on a highway for hour. How far does Carol travel to work?

Answers

Complete question :

It takes Carol 30 minutes to drive to work using two roads. She drives 24 mph on a small road 1/2 for hour. Then she drives 56 mph on a highway for 1/4 hour. How far does Carol travel to work?

Answer:

26 miles

Step-by-step explanation:

The distance traveled is given by :

Distance = speed * time

Distance covered on small road :

24 mph * 1/2 hours = 12 miles

Distance covered in highway :

56 mph * 1/4 hours = 14 miles

Total miles traveled = 12 + 14 = 26 miles

Mrs. Jones rented a truck. Easy math problem. Only answer if you know how to do it. Help needed ASAP

Answers

Answer:

80%

Step-by-step explanation:

150/100*20=$30

150-30=120

120/150=0.8=80%

Tina realizes that she needs to figure out the answer to the question, "How many groups of 1/12 are in 2?"

Answers

Answer:

24

Step-by-step explanation:

To find how many 1/12 are in 2 divide 2 by 1/12

2/(1/12) = 2 x 12 = 24


Martin needs to ship a box that weighs 12,000 grams. How should be move the decimal point to convert this number
to kilograms?
O 3 places to the left
O 3 places to the right
O 2 places to the left
O 2 places to the right

Answers

3 places to the left

(1 gram=0.001 kilograms)
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