In how many ways 4 books can be chosen from 8 different books and be arranged in 4 spaces on a bookshelf? ​

Answers

Answer 1

Answer:

hope this helps

Step-by-step explanation:

3*2 * 1 = 24 ways . It is called arrangement or permutations, while if you need to group some objects it is called combination and there we need to consider unique groups only.


Related Questions

Graph the given function.
f(x)=(x-1)^3+2

Answers

Answer:

Sorry

Step-by-step explanation:

For my Poor H. And Coordinates

The inequality - 15<-6 is given. Write the inequality you get when you perform the
following operation.
Divide both sides of the inequality by 3.

Answers

Answer:

-5

Step-by-step explanation:

-15<-6=-15

-15÷3

=-5

Inequalities are used to show unequal expressions. There are five inequalities, and they are: not equal to, greater than, less than, greater than or equal to and less than or equal to.

The inequality when both sides of [tex]-15 < -6[/tex] is divided by 3 is [tex]-5< -2[/tex]

Given that:

[tex]-15 < -6[/tex]

Divide both sides by 3

[tex]-15 \div 3< -6 \div 3[/tex]

Evaluate the division

[tex]-5< -2[/tex]

Hence, the inequality when both sides of [tex]-15 < -6[/tex] is divided by 3 is [tex]-5< -2[/tex]

Read more about inequalities at:

https://brainly.com/question/17194874

find the defference between 5 2/7 and 2 2/4​

Answers

Answer: 39/14

Step-by-step explanation:

Given

5 2/7 - 2 2/4

Convert mixed fraction to improper fraction

5 2/7 = (5 × 7 + 2) / 7 = (35 + 2) / 7 = 37/7

2 2/4 = (2 × 4 + 2) / 4 = (8 + 2) / 4 = 10 / 4 = 5/2

Find the common denominator for 37/7 and 5/2

First 10 multiples of 2 = 2, 4, 6, 8, 10, 12, 14, 16, 18, 20

First 5 multiples of 7 = 7, 14, 21, 28, 35

Since 14 is the first common multiple in the lists, 14 would be the common denominator of 37/7 and 5/2

Convert to the common denominator

(37 × 2) / (7 × 2) = 74 / 14

(5 × 7) / (2 × 7) = 35 / 14

Simplify by subtraction of numerator

=74/14 - 35/14

=(74 - 35) / 14

=[tex]\boxed{\frac{39}{14} }[/tex]

Hope this helps!! :)

Please let me know if you have any questions

calculate the absolute value
| 4 - 3x | = 5x + 4 ​

Answers

Recall the definition of absolute value:

• |x| = x if x ≥ 0

• |x| = -x if x < 0

So we have 2 cases to consider:

• If 4 - 3x ≥ 0, then |4 - 3x| = 4 - 3x, and we have

4 - 3x = 5x + 4

8x = 0

x = 0

• If 4 - 3x < 0, then |4 - 3x| = -(4 - 3x) = 3x - 4, which gives

3x - 4 = 5x + 4

2x = -8

x = -4

However, keep in mind that |x| is always non-negative. If x = -4, then the right side of the equation becomes

5(-4) + 4 = -20 + 4 = -16 < 0

so the solution in this case is extraneous.

order these numbers from least to greatest
2.069, 2.7, 2.6912, 2.69

Answers

Answer:

2.069, 2.69, 2.6912, 2.7

Step-by-step explanation:

11x-3y=54 find slope and y intercept

Answers

Answer:

m=11/3,y intercept is (0,-18)

Step-by-step explanation:

-3y=54-11x

y=-18+11/3x

the slope is 11/3

the y intercept is (0,-18)

The manager is checking the results of the customer satisfaction surveys. The ones he has looked at have scores of 79%, 92%, 71%, and 86%. What score must be on the next survey to have a mean average of exactly 85% for the five surveys?

Answers

Answer:

97%

Step-by-step explanation:

for such a question we can use the percentage numbers like real unit numbers, as we need to analyze just the percentage numbers and align them with another percentage number with the result of another percentage number.

so, we just use the percentage numbers and deal with mean values and such like with real unit numbers.

therefore we need to find x

(79 + 92 + 71 + 86 + x) / 5 = 85

as the sum of all numbers divided by the number of measurements is the mean value.

and so,

79 + 92 + 71 + 86 + x = 425

328 + x = 425

x = 97

so, the next site must be 97%, so that the average for the 5 surveys will be exactly 85%

A bike rental shop rents out bicycles with a flat rate of $6 and then charges $2 per hour a person rents out the bike. Identify the independent variable and the dependent variable. Then write an equation relating the cost, C, to the number of hours the bicycle was rented.

Independent Variable:

Dependent Variable:

Equation:

Answers

Answer:

Independent Variable: Number of hours

Dependent Variable: Cost

Equation: C = 2x + 6

Step-by-step explanation:

    The independent variable (x) is the variable that is manipulated. In this instance, that would be the number of hours a person rents out the bike.

    The dependent variable (C) is the variable that is manipulated depending on the value of the independent variable. In this instance, that would be the total cost for renting the bike.

    The total equation would be C = 2x + 6. The coefficient, 2, represents the charge of $2 per hour and the 6 represents the starting charge of $6.

PLS HELP WILL MARK BRAINLIEST IF GOTTEN RIGHT!

Answers

Answer:

3 feet

Step-by-step explanation:

The equation modeled by this throw is

-16t^2+8t+2

Using the vertex x coordinate formula of -b/2a,

we find that the x coordinate of the vertex is 0.25. Subbing 0.25 seconds for t into -16t^2+8t+2, we find out that the y value of the vertex is 3. This means the highest point reached by the ball is 3 feet and this takes 0.25 seconds

What is the volume of a square pyramid that is 15cm tall and has a base area of 16 square centimeters

Answers

Answer:

Formula

V=a^2h/3

a is the base area

h is the height

V= 16^2×15/3

V=1280cm^3

Use the distributive property to remove parentheses
2/5(4+10y)

Answers

2/5(4) + 2/5(10y)

8/5 +20y/5

8/5 + 4y

Answer:

8/5 + 4y

Step-by-step explanation:

[tex]\frac{2}{5}(4)=\frac{8}{5}\\\\\frac{2}{5}(10y)=4y\\\\\frac{8}{5}+4y[/tex]

19. Solve 5x^2 - 6x + 1 = 0 using the quadratic formula.
Please give detailed steps!!

Answers

Answer:

x = 1 , x = 1/5

Step-by-step explanation:

episode the ratio of males to females were 3 to 9 if there are 360 people at the fair how many males are there exact answer ​

Answers

Answer:

90 males

Step-by-step explanation:

3 males plus 9 females is 12 overall.

360/12 is 30 for each "1".

30 multiplied by 3 males is 90 males.

Hopefully that made sense. Sorry I'm bad at explaining.

An angle has a measure of n degrees. Which of the following expressions would be used to find the measure of its complement?
​a. n - 90
b. 90 -n
c. 180 - n
d. n - 180

Answers

9514 1404 393

Answer:

  b. 90 -n

Step-by-step explanation:

The sum of an angle and its complement is 90 degrees. If c represents the complement, this means ...

  n +c = 90

  c = 90 -n . . . . . . . . . subtract n from both sides of the equation

The expression 90 -n can be used to find the complementary angle.

Tom works at a car dealership selling cars. If he makes $4000 a month and $250 per car he sells, how much did he
make in July if he sold 12 cars? In August he made $6500, how many cars did he sell?

Answers

Answer:

Answer = he made 7,000 in July and sold 10 cars in august.

Step-by-step explanation:

PLEASEEE HELP I AM GIVING BRAINLIEST PLSSS

Answers

Answer:

Step-by-step explanation:

what is the value of this rectangular prism 4/5 3/2 5/3​

Answers

Answer:

2

Step-by-step explanation:

the volume of the rectangular prism =

4/5 × 3/2 x 5/3 = (4×3×5)/(5×2×3)

= 60/30 = 2

L=4/5B=3/2H=5/3

[tex]\\ \rm\longmapsto Volume=LBH[/tex]

[tex]\\ \rm\longmapsto Volume=\dfrac{4}{5}\times \dfrac{3}{2}\times \dfrac{5}{3}[/tex]

[tex]\\ \rm\longmapsto \dfrac{60}{30}[/tex]

[tex]\\ \rm\longmapsto 2units^3[/tex]

10. A rectangle has width the same as a side of a square whose perimeter is 20 m. the length
of the rectangle is 9 m. Find the perimeter of this rectangle.

Answers

Answer:

The perimeter of the rectangle is 28m

Step-by-step explanation:

Perimeter of a square = 4 x side length

20 = 4 x side length

side length = 20/4 = 5m

width of rectangle = 5m

length of rectangle = 9m

Perimeter of rectangle = 2(l + w)

= 2(9 + 5)

= 2(14)

= 28m

lim x ->0 ln(1+5x)/2x

Answers

answer

−>0(1+5)/2

hope it helps

Help please due tomorrow

Answers

Answer:

1/2 is the answer because its half

Answer:

1 / 2

Step-by-step explanation:

10 is to 5 as  10 (5/10) = 50/10 = 5

8 is to 4 as 8 ( 4/8 ) = 32/8 = 4

6 is to 3 as 6 ( 3/6 ) = 18/6 = 3

Each of the scale factors are 5/10, 4/8, 3/6 which equals 1/2.

Can someone help me quick!
2[5 + 2(8 - 6)]

Answers

Answer:

2(5+2(2))=

2(5+4)=

2(9)=

18

Step-by-step explanation:

An elevator starts on the 15th floor, then rises 8 floors, drops 10 floors and rises 2 floor. What floor is the elevator on?

Answers

Answer:

15

Step-by-step explanation:

rises 8 floors = 15 + 8 = 23

drops 10 floors = 23 - 10 = 13

rises 2 floors = 13 + 2 = 15

Write the perimeter of the triangle as a simplified expression

Answers

Perimeter=sum of sides

[tex]\\ \qquad\quad\sf\longmapsto Perimeter=6y+3y+5+y-4[/tex]

[tex]\\ \qquad\quad\sf\longmapsto Perimeter=6y+3y+y+5-4[/tex]

[tex]\\ \qquad\quad\sf\longmapsto Perimeter=9y+y+1[/tex]

[tex]\\ \qquad\quad\sf\longmapsto Perimeter=10y+1[/tex]

The simplified expression of the perimeter of the given triangle is  10y + 1

Use the concept of a triangle defined as:

A triangle is a three-sided polygon, which has three vertices and three angles which has a sum of 180 degrees.

In the given figure:

Hypotenuse = 6y

Perpendicular = 3y + 5

Base = y - 4

The perimeter of a triangle = Hypotenuse + Perpendicular + Base

Therefore,

Perimeter of the triangle = 6y + 3y + 5 + y  -  4

Perimeter of the triangle = 10y + 1

Hence,

The perimeter of the triangle is 10y + 1.

To learn more about the triangle visit;

brainly.com/question/1058720

#SPJ3

Which of the following fractions converts to a repeating decimals

Answers

Step-by-step explanation:

The answer is a option.

hope it helps

option A I believe :)

A group of friends in Chicago watched a televised bullfight. They ordered 3 pizzas ($15 each), 15 drinks ($1.50 each), and 6 large nachos ($5.80 each). After adding 5% and a 20% tip to the total, what did they pay for the food? (The tip is 20% of the total before the tax is added) around the answer to the nearest while cent

Answers

Answer:

$127.875

Step-by-step explanation:

cost of 3 pizzas= $15*3

cost of 3 pizzas=$45

cost of 15 drinks=$1.50*15

cost of 15 drinks=$22.5

cost of 6 nachos=$5.80*6

cost of 6 nachos=$34.8

Total cost = pizza cost+ drinks+nachos

total cost=$45+$22.5+$34.8

total cost=$102.3

Now ,

Tip cost=$102.3*20%

=$20.46

tex cost=$102.3*5%

=$5.115

Bill which all friends pay=total cost+ tip cost+tex cost

= $102.3+$20.46+$5.115

=$127.875

Find the value of x.

Answers

ANSWER:
x=8

All the sides are equal length (all the angles are so we know that.)

Answer:

x = 8

Step-by-step explanation:

Since all the angles are congruent, this is an equilateral triangle. With an equilateral triangle, all sides are equal.

There are 2 containers of milk in Eric’s refrigerator. One has 3/5 gallon of milk. The other has 3/4 gallon of milk. How many gallons of milk are in Eric’s refrigerator?

Answers

answer

27/20

Step-by-step explanation:

3/5+3/4

12+15= 27

lcm= 20

<
Term 1 2021 MTH 1100 XTIB
=
Write this ratio as a fraction in lowest terms
80 minutes to 30 minutes

Answers

Answer:

8/11

3/11

Step-by-step explanation:

hope this helps!

find the GCF from the two numbers and rewrite the sum using nthe distributive property

24 + 36

Answers

Answer:

The greatest common factor is 6.

Step-by-step explanation:

Greatest common factor is 6. If you use the distributive property then the answer would be 6(4) + 6(6) or 6(4+6). Then you distribute the 6 to each digit and should get 24+36.

Show how find 42 x 27 using an area number

Answers

Answer:

First break it down

42= 40 & 2

27= 20 & 7

Then times 40 & 20 to get 800

20 x 2 to get 40

40 x 7 to get 280

7 x 2 to get 14

Now add them all together.

800 40 1080

+280 +14 + 54

---------- ------- ---------

1080 + 54 = 1134

See the picture below for the “area” part of the answer.
Other Questions
Help help help help What blood types are possible for a child whose parents both have AB blood type?1. A11. BIII. ABIV. OA. Only 1B. I and IIC. lll and IVD. I, II, and III What is the equation of a line perpendicular to y = -3x + 4 that passes through the point (-1, 6)? Hi whats the best way to describe Analysis/Argument What was the main goal for the Dada movement?a.producing art that did not show human skill or talentb. changing the perception of art and going against contemporary cultureC.producing a reaction of any kind Community Gym charges a $50 membership fee and a $50 monthly fee. Workout Gym charges a $190membership fee and a $40 monthly fee. After how many months will the total amount of money paid toboth gyms be the same? What will the amount be? Write the chemical formula for this molecule:NNOO Find k such that 16x2 8 /3x+k=0 has a repeated real solution. The zebras have been spotted in arectangular area of the Savannas thatis 1.4 kilometers by 2.4 kilometers. Whatis the area of the rectangle? Mrs. Balbas makes a batch of cookies for her math class. Aaron takes 1/6 of the cookies and runs out the door. Matthew then takes 1/5 of the cookies that are left. Paige takes 1/4 of what remains after Matthew leaves. Koji takes 1/3of what remains after Paige, and then Dylan grabs half of the remaining cookies after Koji. Gavin then swoops in and grabs the last remaining 6 cookies. The rest of the class gets nothing and begins to collectively cry. How many cookies were in the batch, to begin with? An experiment to determine how many breaths a squirrel takes per minute yields this data: minute 1: 65 breaths;minute 2: 73 breaths; minute 3: 67 breaths; minute 4: 71 breaths; minute 5: 62 breaths. Calculate the average number of breaths per minute. Hannah went to the school store to buy supplies and spent $16. She bought four more pencils than pens and two fewer erasers than pens. Pens cost $1.25 each, pencils cost $0.55 each, and erasers cost $0.75 each. If x represents the number of pens Hannah bought, write an equation in terms of x that can be used to find how many of each item she bought. Use your equation to determine algebraically how many pens Hannah bought. Are you going to finish that CROISSANT? Decmial: 0.77 thanks! Give reason for the following:a) An inflated balloon was pressed against a wall after it has been rubbed with apiece of synthetic cloth. It was found that the balloon sticks to the wall.b) When an object is thrown up, it comes back to ground.c) Mountaineers suffer nose bleeding at higher altitudes.d) Foundations of high rise buildings are kept wide.e) Deep sea divers or high altitude fliers wear special suits.f) Walls of a dam are thickened near the base. 8/6-5/4=Please help quick What is a tempo? and what is pitch? Why were Jews traditionally discriminated against in ancient times?A. They did not look the same as the people around them.B. They did not worship many gods or emperors.C. They were known to be a mean, aggressive people.D. They came from a land far away from everyone else. What is the coefficient Which word describes a negative feeling about oneself or ones worth? A. forlorn B. inferiority C. earnest D. disposition