The book fair sold 60% of the books
donated to the book fair. They sold
72 books. How many books were
donated in all?

Answers

Answer 1

Answer:

120 Books

Step-by-step explanation:

60% of 120 is 72


Related Questions


Which is closest to the volume of the figure shown below?
7 mi
2 mi
351.9 cubic mi.
Ob
117.3 cubic mi.
Ос
29.3 cubic mi.
Od
7.3 cubic mi.

Answers

Answer:

c. 29.3 cubic mi

Step-by-step explanation:

Applying,

V = πr²h/3.............. Equation 1

Where V = volume of the cone, r = radius of the circular base, h = height of the cone, π = pie

From the diagram,

Given: h = 7 mi, r = 2 mi

Constant: π = 3.14

Substitute these values into equation 1

V = 3.14(7×2²)/3

V = 29.3 cubic mi

Hence the right answer is c. 29.3 cubic mi

HELP:::: Find the volume

Answers

Answer:

94,080 cm^3

Step-by-step explanation:

V= L • W • H

V= 42 • 35 • 64

V= 94,080

Hope this helps, good luck!

Step-by-step explanation:

42x35= 1,470

1,470x64= 94,080cm³

Hope it helped!

if one of the factor of x²+x-20 is (x+5) find other factor​

Answers

Answer:

Step-by-step explanation:

x^2+x-20

=x^2-(5-4)x-20

=x^2-5x+4x-20

=x(x-5)+4(x-5)

=(x-5)(x+4)

therefore the other factor is (x+4)

Answer:

(x - 4)

Step-by-step explanation:

METHOD 1 (Long Division Method):-

[See the attachment for full solution of Method 1]

One factor of x² + x - 20 is already given. To find the other factor , divide the polynomial with the factor and the quotient you'll get after dividing will be the second factor of the polynomial.

METHOD 2 (Factorising) :-

Factorise x² + x - 20.

Split the middle terms.

[tex]=> x^2 + 5x - 4x - 20[/tex]

Take 'x' common from first two terms and take '-4' common from last two terms.

[tex]=> x(x + 5) - 4(x + 5)[/tex]

Take '(x+5)' whole common from the expression.

[tex]=> (x + 5)(x - 4)[/tex]

(x + 5) & (x - 4) are the factors of x² + x - 20.

Of the first 52 contestants, exactly 12 contestants win the game. How does the actual number of winners compare to the expected number of winners? What needs to happen for the experimental probability to approach the theoretical probability? Explain

pls help me

Answers

Answer:

Expected number of winners with 52 contestants:52*5/13 = 20.The experiment result is almost twice less (12 vs 20).In order to change the results of experimental probability some of the letters may need swapped, (probably the letters are in alphabet order) but for this we need more data.

Step-by-step explanation:

Experimental probability is probability that is determined on the basis of the results of an experiment repeated many times. Theoretical probability is probability that is determined on the basis of reasoning. Probability is a value between (and including) zero and one.

also whats your discord

what is the Q3 of the following set of data? 106,117,152,132,148,101,124,110,167,139,112

Answers

Answer:

148

Step-by-step explanation:

First, sort the list in order from smalles to largest:

101, 106, 110, 112, 117, 124, 132, 139, 148, 152, 167

There are 11 numbers in the list, so the median is the 6th number, 124.

The third quartile (Q3) is in the middle of the right-hand half:

132, 139, 148, 152, 167

Help..? Pleaseee , it has to do with the Pythagorean Theorem. But I have no idea how to do it

Answers

Pythagorean Theorem is

a ²+ b ² = c ²

a and b are the shorter sides, while c is the hypotenuse, or longest side. Let’s say the side we are looking for is “b”.

Let’s first rearrange the equation, then sub in.

a ²+ b ² = c ²
b ² = c ²- a ²
b = √ (c ²- a ²)
b = √(17 ²- 15 ²)
b = √(289-225)
b = √ 64
b = 8

ASAP
-WILL MARK BRIANIST

Answers

its A, C, and E

Good Luck

Answer:

I got A and C

Step-by-step explanation:

The variable in answer choice A would be when it says "An elephant eats 5 tons of food every day". In C the the number of min is reverse multiplies by the number of tests.

Find area of the composite figure..

Answers

Answer:

627square inches

Step-by-step explanation:

Area of the composite figure.. = area of triangle + area of parallelogram

Since the triangle is an equilateral triangle;

Area of the triangle = r²sintheta

Area of the triangle = 18²sin60

Area of the triangle = 324sin60

Area of the triangle  = 324(0.8860)

Area of the triangle = 280.584 square in

Area of the triangle = 281 square inches

Area of parallelogram = absintheta

Area of parallelogram = 20(20)sin60

Area of parallelogram = 400(0.8660)

Area of parallelogram = 346.4square inches

Area of parallelogram = 346 square inches

Area of the figure = 346  + 281

Area of the figure  = 627square inches

Heights of players on basketball team

qualitative Or quantitative?

Answers

I’m pretty positive it’s Quantitative

Answer:

It is Quantitative.

Step-by-step explanation:

Quantitative data is information about quantities; information that can be measured with numbers.

Qualitative data describes qualities or characteristics; information collected using questionnaires, interviews, or observation, and frequently appears in narrative form.

Examples:

It is 25° Celcius today. - Quantitative

I drooled after smelling freshly baked cookies. - Qualitative

Tips:

Think of Quantitative as Quantity; numbers.

Think of Qualitative as Quality; description/characteristics.

Write True or False. You can use the measures of the angles formed by two lines and a transversal to determine whether the two lines are parallel.

Answers

Answer:

I think that the answer is true (explanation might not be 100% accurate)

Step-by-step explanation:

Given that for 2 lines to be parallel, they have to never intersect at any point, meaning they both have to be straight and "facing" the same way. If either line has a tilt/angle of any sort, then they are not parallel.

someone PLEASE HELP if you know what you're talking about!! i really need this!

The circumference is about ___ m.

Use 3.14 for π.

Answers

Answer:

The circumference is:

14.6 x 3.14 = 45.844 (m)

Step-by-step explanation:

Jack tool out a 6-year loan for $25,000 to purchase a boat at a 4.5% interest rate. If the interest is compounded monthly, what will he have paid total over the course of the loan?

Answers

Answer:

A = $32,732.58  

A = P + I where

P (principal) = $25,000.00

I (interest) = $7,732.58

Step-by-step explanation:

Given data

Time= 6 years

Principal=  $25,000

Rate= 4.5%

First, convert R as a percent to r as a decimal

r = R/100

r = 4.5/100

r = 0.045 rate per year,

Then solve the equation for A

A = P(1 + r/n)^nt

A = 25,000.00(1 + 0.045/12)^(12)(6)

A = 25,000.00(1 + 0.00375)^(72)

A = $32,732.58

PLEASE HELP DUE IN AN HOUR NO LINKS PLEASE. ​

Answers

Answer:

y = 3/2  when x = 15

Step-by-step explanation:

y = k / √1+x  

2 = k / √1+8 = k/3  

k = 6  

y' = 6 / √1+15 = 6/4 = 3/2

What are the areas of #6 and #8?

Please help me out

Answers

Answer:

Number 6 is 295 ft^2

Number 8 is 24 m^2

Answer:

[tex]unshadded \: region = {2}^{2} + {2}^{2} \\ = 4 + 4 \\ = 8 \\ totol \ \: region = 8 \times 4 = 32 \\ \\ area \: of \: shadded \: region = 32 - 8 = 24[/tex]

Helpppppppppppppppppppp

Answers

Answer:

10 games for $25

Step-by-step explanation:

level up: y = 1.5x + 10

infinity arcade: y = 2x +5

x = # of games

1.5 (10) + 10 = 2 (10) + 5

15 + 10 = 20 + 5

25 = 25

Mike has a total of 50 quarters and dimes. The coins total value is $10.55. How many quarters
does he have?
PLEASE DUE IN 10 MINUTESSS

Answers

Answer:

Mike will only need 42 quarters to make 10.50

Step-by-step explanation:

a dime is dropped from a building at 1.024 ft . if the equation for height as a function of time is h(t)=-16t^2+ initial height where is t is time in seconds and h(t) is height in feet, how many seconds will it take for the dime to hit the ground?

Answers

Answer:

The dime hits the ground after 8 sec.

Step-by-step explanation:

Set h(t) = -16t^2 + h(0) equal to 0:  -16t^2 + 1,024 ft = 0, or:

16t^2 = 1,024 ft, or:

 t^2 =  64 ft^2

Then t = +8 sec

The dime hits the ground after 8 sec.

What is the slope (rate of change)
Someone please help me with this im not good with graphs.​

Answers

Answer:

1

Step-by-step explanation:

1. To get the slope, you need to divide the rise by the run.

2. Pick two points each on the X-axis and pick corresponding points on the Y axis and then name them y2, x2 and y1, x1.

3. The rise will be y2-y1

4. The run will be x2-x1

5. Therefore, the slope is rise/run = (y2-y1)/(x2-x1)

In this case, let's take 2 on the X axis as x2 and the corresponding point on the Y axis  as y2 which in this case happens to also be 2.

Now, let's take 1 on the X axis as x1 and the corresponding point on the Y axis  as y1 which is also 1.

now using the formula (y2-y1)/(x2-x1), we get: slope = (2-1)/(2-1) = 1

2.5kg of sultana brand costs $4.80 and 1.5 kg of Weetabix costs $2.95, show with working which is the best buy?

Answers

2.5kg of sultana brand cost 4.80$

price of 1 kg sultana brand = 0.520$ per kg

1.5 kg of weetabix costs $2.95

price of 1 kg weetabix brand = 0.509$

The best buy is weetabix !

hey! please help i’ll give brainliest

Answers

Answer:

A (Option 1)

Step-by-step explanation:

Answer:

A

hope this helps

have a good day :)

Step-by-step explanation:

Question 54
Jonathan wants to fence off a rectangular area for his dog. He has 24 metres of fencin
he wants the largest possible area what should the dimensions of the fenced off area be​

Answers

Answer:

6 + 6 + 6 + 6= 24

Step-by-step explanation:

ad four sixes

Find the length of arc XW. Round your answer to the nearest hundredth.

Answers

Answer:

15.08 m

Step-by-step explanation:

The angle XZW :

XZW + 108° = 180°

XZW = 180° - 108°

XZW = 72°

Length of an arc = θ / 360 * πd

d = diameter = XV = 24

Length of arc XW = (72/360) * π * 24

Length of arc XW = 15.0796

Length of XW = 15.08 m

Answer:

15.08

Step-by-step explanation:

The number of patients treated at Dr. Frank's dentist office each day was recorded for nine days: 18,
19, 19, 4, 14, 8, 22, 3, 1. Using the given data, find the mean for this sample.

A. 12

B.19

C. 29

D. 14

Answers

Answer: 12

Step-by-step explanation: The mean is basically the average. So, start by lining up the numbers from smallest to largest. 1, 3, 4, 8, 14, 18, 19, 19, 22. Then, add them all together. You get 108. Then, divide 108 by the number or numbers in the data set, which in this case is 9. So 108 divided by 9 = 12. Your answer is A. --> 12

Hope that helped!!

A baker is selling pies his first customer buys 1/2 of all the pies plus 1/2 of a pie. His second customer then buys 1/2 of the pies plus 1/2 of a pie the last customer buys 1/2 of the pies plus 1/2 pie. he has no more pies. how many did he start with?

Answers

Answer:

7 pies

Step-by-step explanation:

The first customer buys half of the pies (3-1/2) plus 1/2 of a pie (technically 4 pies in total) -----> there are 3 pies left.

The second customer buys half of the pies leftover (1-1/2) plus another 1/2 (technically 2 pies in total) -----> this leaves 1 pie.

The last customer buys half of the pies leftover (1/2) plus another 1/2 (technically 1 pie in total) -----> this leaves 0 pies.

Se va a colocar una escalera que mide 5 metros (m) de longitud sobre una pared. El fabricante de la escalera recomienda que, por seguridad, el ángulo que forme la escalera con el piso sea de 78°, ¿Cuál será la distancia sobre el piso del pie de la escalera a la pared?

Answers

Answer:

4.9 m

Step-by-step explanation:

Resolvemos la pregunta anterior usando la función trigonométrica de seno

sin θ = Opuesto / Hipotenusa

θ = 78 °

Hipotenusa = Longitud de la escalera = 5 m

Opuesto = Distancia sobre el suelo = x

sin 78 = x / 5m

Multiplicar cruzada

x = sin 78 × 5 m

x = 4.8907380037m

Aproximadamente

= 4.9 m

triangle 15 13 b. .................................​

Answers

Answer:

d) 7.5

Step-by-step explanation:

15sqrd= 225

13sqrd= 169

225-169= 59

[tex]\sqrt{59}[/tex]=7.5(1dp)

PLEASE!! I JUST REALLY NEED SOME HELP RIGHT NOW!! T∆T
Using the 45o -45o -90o triangle theorem, solve this triangle.​

Answers

Answer:

Step-by-step explanation:

take 45 degree as reference angle

using sin rule

sin 45=opposite/hypotenuse

1/[tex]\sqrt{2}[/tex]=l/11[tex]\sqrt{2}[/tex] (do cross multiplication)

l[tex]\sqrt{2}[/tex]=11[tex]\sqrt{2}[/tex]

l=11[tex]\sqrt{2}[/tex]/[tex]\sqrt{2}[/tex]

l=11

How do you find the area of a circle???

Answers

The area of a circle is pi times the radius squared
A= π r2 Depending on what the value is in “r”

Determine the value of x.
A) 12
B) 2√3
C) 12√3
D) 6√3

Answers

Answer:

D

Step-by-step explanation:

Using the tangent ratio in the right triangle and the exact value

tan60° = [tex]\sqrt{3}[/tex] , then

tan60° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{x}{6}[/tex] = [tex]\sqrt{3}[/tex] ( multiply both sides by 6 )

x = 6[tex]\sqrt{3}[/tex] → D

Two square pyramids are similar.
The sides of the bases are 4 cm and
12 cm. The height of the smaller
pyramid is 6 cm. Find the height of
the larger pyramid.

Answers

Answer:

18 cm

Step-by-step explanation:

Since the pyramids are similar then the ratio of corresponding sides are equal, that is

12 ÷ 4 = 3

Then the height of the larger pyramid is 3 times the height of the smaller.

height of larger pyramid = 3 × 6 = 18 cm

Other Questions
In a simple random sample of 1500 young Americans 1305 had earned a high school diploma. a. What is the standard error for this estimate of the percentage of all young Americans who earned a high school diploma? b. Find the margin of error, using a 95% confidence level, for estimating the percentage of all young Americans who earned a high school diploma. c. Report the 95% confidence interval for the percentage of all young Americans who earned a high school diploma. d. Suppose that in the past, 80% of all young Americans earned high school diplomas. Does the confidence interval you found in part c support or refute the claim that the percentage of young Americans who cam high school diplomas has increased? Explain. The function f (x) = 2* and g(x) = f(x) + k. if k = 2, what can be concluded about the graph ofg(x)?the graph of g(x) is shifted verticallySelect a Valuethe graph of g(x) is shifted horizontallySelect a Value Is it morally permissible to believe in God just because it is to your practical advantage to believe father is 20 years older than son. if the sum of their ages is 40 years find their age You are very keen to take up a Personality Development and Public Speaking Course. Write a letter of enquiry seeking the details of the course. What are Japan's closest neighbors? what is a topic sentence for youth crimes? Which of the following best describes area?A. Distance B. CoverC. FillD. Time Pls, help with this question The simple interest on 400 invested for 4 month was 12.what is the yearly rate of interest which is a characteristic of a constitutional monarchy The annual inventory of The Bike Shop Inc. shows the following information for mountain bikes: DATE QUANTITY COST TOTAL January 15 Beginning Inventory 80 $126 $10,080 March 20 Purchase 30 120 3,600 June 21 Purchase 20 126 2,520 October 12 Purchase 15 122 1,830 December 29 Purchase 10 122 1,220 Total available for sale 155 $19,250 If 36 mountain bikes were on hand on December 31, what is the value of the ending inventory using the LIFO method of inventory pricing what is the current ph level of the ocean In a small metropolitan area, annual losses due to storm, fire, andtheft are assumed to be independent, exponentially distributed random variableswith respective means 1.0, 1.5, 2.4. Determine the probability that the maximumof these losses exceeds 3. 1/5 divided by 2 = ___ which of the following is equal to |-8+4|? 4 people can stay in a hotel for 5 days for $ 240. Find the bill for 5 people staying inthe hotel for a week During the , the Mongols encouraged trading activities by foreign merchants. They reestablished the Silk Road. The Mongols welcomed the foreign merchants at Chinese ports. European merchants such as entered China during the time. Problem 31:The parallel circuit depicts three resistors connected to a voltage source.The voltage source (AVtot) is a 110.-V source and the resistor values are15.4 QR1), 21.9 D (R2) and 11.7 Q (R3).b. Determine the current in each branch resistor.c. Determine the total current in the circuit. Which of the following class definition defines a legal abstract class Group of answer choices public class Rectangle abstract { public abstract double findArea ( ); } public abstract class Rectangle { public abstract double findArea ( ); } public class Rectangle { public abstract double findArea ( ); } public class abstract Rectangle { public abstract double findArea ( ); }