in June Mr Chen's students read 40 books. In July, they read 30 books. what is the percent increase or decrease in the number of books they read?

Answers

Answer 1

Answer:95%

Step-by-step explanation:

Answer 2

Answer:

25% decrease

Step-by-step explanation:

did the quiz


Related Questions

A building casts a shadow 47 feet long. At the same time, a 38‐foot‐tall flagpole casts a shadow 9.4 feet long. What is the height of the building?

Answers

210 feet  To answer this question you need to know the ratio of shadow with the actual object. In this case, 42 feet flagpole cast 9.4 feet shadow. Then the ratio is:

42feet/9.4 feet= 4.468

That means the actual height is 4.468 times of shadow length. After that, you can multiply the ratio with the shadow to know the object actual size. It would be: 47 feet x 4.468=  210 feet.

Does anyone know the answer to this?
18t + (3b)t + 75

Answers

18+(3b)t+753(6t+bt+25

HELP IMMEDIATELY! Please help, on 1, 2 and 3. I’m so lost :(

Answers

When two variables are proportionate, they increase and decrease at the same ratio.

36 / 40 = 0.9

0.9 * 140 = 126

When y = 140, x = 126.

2. 150 / 30 = 5

5 * 48 = 240lbs

A person who weighs 48 lbs on the moon weighs 240lbs on Earth.

3. 110 / 66 = 0.6

0.6 * 80 = 48

y = 48 when x = 80

Sarah is playing a board game. Her score was -275 at the start of her turn. At the end of her turn, her score was -425. What was the change in Sarah's score (in points) from the start of her turn to the end?

Answers

Answer:

150 points

Step-by-step explanation:

Since they are asking for a change, first you need to subtract the greater number by the least number. So the equation now looks like -275 - (-425), solving this using integer skills will get you a answer of 150 points.

Answer: -150

Step-by-step explanation:

The change is obtained by subtracting the original term from the second term so you do -425 + 275 = -150, the change in Sarah’s score.

Can someone help me with this please :)

Answers

It 90 because u mult 10 x9

Answer:

47.25

Step-by-step explanation:

9 times 10.5=94.5/2=47.25

Algebra KPL and LJPL are a linear pair, m_ KPL = 2x + 24, and mLJPL = 4x + 36. What are the measures of ZKPL and LJPL? (2x + 24) (4x + 36) к P

Answers

Answer:

64° = ∠KPL116° = ∠JPL

Step-by-step explanation:

The sum of the measures of a linear pair of angles is 180°.

  (2x+24) +(4x+36) = 180

  6x = 120 . . . . . . subtract 60, collect terms

  x = 20

  (2(20) +24)° = 64° = ∠KPL

  (4(20) +36)° = 116° = ∠JPL

szfdxgcvjhgfdshdxfjcgkvhlkgfgd

Answers

Answer: B

Step-by-step explanation:

-6.53, -6 1/4, 6.57, 6 3/4.

a scientist wants to study 24 stars he studies 1/3 of them one week and 1/4 of them next week how many of them are left to study?

Answers

6 because 1/3 of 24 is 8 and 1/4 of 8 is 6

To prove triangles similar, we only need to prove corresponding angles congruent OR corresponding sides are proportional. However, with a quadrilateral we need to prove corresponding angles congruent AND corresponding sides are proportional. Explain in your own words why it takes more to prove quadrilaterals congruent. Include examples demonstrating how “just angles” or “just sides” is not enough.

Answers

Answer:

we can proove by ASA congruence or SAS congruence rule

If f(x) = x2 + 1 and g(x) = x – 4, which value is equivalent to (f circle g) (10)? 37 97 126 606

Answers

Answer:

A. 37

Step-by-step explanation:

(fxg) (10)

Step 1.  G is the second letter, so we first use the equation g(x) = x-4

Step 2.  Plug in ten for x.   g(x) = 10-4

Step 3.  ten minus four is six.  g(x) = 6

Step 4.  Now the new x is 6 and we use the second equation next.

f(x) = x^2 + 1

Step 5.  Plug in six for x. f(x) = 6^2 + 1

Step 6.  six to the power of two is 36. f(x) = 36 + 1

Step 7.  36 plus one is 37. f(x) = 37

Step 8.  Answer is thirty seven!!!! Cheer!!!!

A';nswer:

a

Step-by-step explanation:



Point M is the midpoint of segment PR. If PM= 4x - 12 and MR =2x + 21, solve for x and determine the measure of segment PR
Set up an equation to solve for x.

Answers

Answer:

x=4.5

Step-by-step explanation:

pm is equal to mr so you can set the equations to equal each other and solve

please help.
g(-5) =

Answers

Answer:

Hi there!

G(-5) = -6

Step-by-step explanation:

g(-5) means to plug in neg 5 for x. On this graph, we can see the point (-5,-6). This is your solution.

help me i willl mark if you get it correct

Answers

Answer:

8+(3/4w)

Step-by-step explanation:

8 for the miles she's already gone then plus 3/4 times number of weeks to represent how many more she'll go

This graph shows the number of miles a freight train travels over a period of time.
Freight Train Travel Rate
What is the slope of the line?
Use the number pad to enter your answer in the box

Answers

It issssssssssssssss 3/4 . X 3204

What value does the 8 represent in the number 865,202 ?

Answers

The value of 8 is 800,000.

The value of each digit in a number is known as the place value.  The place value of 8 in the number 865,202 is 800,000.

What is the place value of a digit in a number?

The value of each digit in a number is known as the place value. The 5 in 350, for example, represents 5 tens, or 50, whereas the 5 in 5,006 represents 5 thousand, or 5,000. It is critical that children that while a digit can be the same, its value is determined by its position in the number.

How do identify the place value of a digit in a number?

The place values on the left of the decimal point start as ones, tens, hundreds, and so on. The place value on the right of the decimal point starts from the point and goes to the right as tenths, hundredths and so on

The tens mean multiply by 10The tenth means the tenth part of that digit which is that digit divided by 10

The place value of 8 in the number 865,202 is 800,000.

Learn more about the Place Value:

https://brainly.com/question/27734142

#SPJ2

Dos veces la edad de Mary más 7 es igual a 33. ¿Cuál es la
edad de Mary?

Answers

Answer:

La edad de Mary es:

13 años

Step-by-step explanation:

Planteamiento:

2m + 7 = 33

m = edad de Mary

Desarrollo:

2m = 33 - 7

2m = 26

m = 26/2

m = 13

Comprobación:

2*13 + 7 = 33

26 + 7 = 33

12 divided by 5/6 (pretty easy but im lazy)<3

Answers

Answer:

14.4

Step-by-step explanation:

Hope this helps you :)

Answer:

72/5 = 14.4

Step-by-step explanation:

what's pi means for a repeating decimal

Answers

Pi is an irrational number, which means it cannot be represented as a simple fraction, and those numbers cannot be represented as terminating or repeating decimals. Therefore, the digits of pi go on forever in a seemingly random sequence.

If Adam orders a book from Store X, how much will he owe to the nearest cent? The tax rate only applies to the cost of
the book.
Comparison of Online Bookstores
Store X
$17.00
6%
Store Y
$18.00
8%
Cost of book
Tax rate
Shipping.









HELP FAST! ILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST
10% of cost of the book
FREE
O $17.16
$19.72
$21.53
$27.20

Answers

Answer:

B) $19.72

Step-by-step explanation:

Sorry if I am late, hope you got a good grade:)

I got a 100 on the test for edge 2020

Answer:

B

Step-by-step explanation:

TWO QUESTIONS !! GEOMETRY

Answers

question 3 the answer is y= x+1 and the answer to question 4 is -2/5

Answer:

1) y= 1x +1

2) -2/5

Step-by-step explanation:

5 + 1/ 4 + 2 = slope of 1

y-5 = 1(x-4) solve for y

y = 1x + 1

HELP ME ASAP WILL GIVE 5 STARS AND A THANKS

Answers

Answer:

The mayor will lose by a large percentage.

Answer:

D??

Step-by-step explanation:

It may be D or A I’m not sure!!

how to do this question c. I know how to do b and a​ 6,0,3,2,2,5 that they scored

Answers

Answer:

I’m pretty sure you have to multiply the 4 because that’s how many points you get per Galo and multiply by 7 because it was the seventh game so 28.

Step-by-step explanation:

please help!! (click on pic)

Answers

Answer:

1/2x³y^6

Step-by-step explanation:

Points P, R, and S, are collinear such that R lies on PS. It is known that the ratio of
PR: RS = 1/3}. Find the location of coordinate R if P is located at (-2,-6) and is
located at (10,30).

Answers

Answer:

1,3

Step-by-step explanation:

Sorry if my English is bad

or if my answer is wrong but from my understanding,

as you can recognize from the photos, we need to understand what a collinear is. Collinear are points that are lying in the same straight line. Thus, we can transform the ratio to fractions which means 1 : 3 into 1/3

Hence, the coordinate R is 1/3 between P and S.

Therefore, to determine coordinate R, we must use the formula that is provided. P is (X1, Y1), S is (X2,Y2), M1 is 1 or the Numerator and M2 is 3 or The denominator.

what is the answer to
10 + (-4)

Answers

Answer:

6

Step-by-step explanation:

Note the rules for signs directly next to each other:  

If there is two positive signs, the result will be positive.

If there is one positive and one negative sign, the result will be negative.

If there is two negative signs, the result will be positive.

In this case, there is a positive and a negative sign. You are, therefore, subtracting 10 with 4:

10 + (-4) = 10 - 4 = 6

6 is your answer.

~

3^2– 2-3 + x = (33 – 3.8) (2) + x

Answers

32-45-75 is possible answer according to me

7¹² ÷ 7⁴ is equal to ___. A. 7³ B. 7⁸ C. 3 D. 1³

Answers

Answer:

  B. 7⁸

Step-by-step explanation:

The four factors of 7 in the denominator cancel four of the twelve factors of 7 in the numerator, leaving 8. When a product consists of 8 factors of 7, we write it as ...

  7⁸

Answer:

B

Step-by-step explanation:

7^12 / 7^4 = 7^8

Simplify 3r + 2(t + 5r).

Answers

Answer:

13r + 2t

Step-by-step explanation:

Step 1: Write out expression

3r + 2(t + 5r)

Step 2: Distribute

3r + 2t + 10r

Step 3: Combine like terms (r)

13r + 2t

3r+2(t+5r)
3r+2t + 10r
13r+2t

2(2t+4)=3/4(24-8t) What does t equal?? plz help!!! thank you so much

Answers

Answer:

T= -5

Step-by-step explanation:

2(2t+4)= 3/4(24-8t)

4×2(2t+4)= 4×3/4(24-8t)

16t+32=72-32

16t-24t=72-32

-8t=40

therefore t equals negative five.

i hope you understand.

the wavelenght of voilet light in a spectrum

Answers

Answer: Violet light is at the higher end of the visible spectrum, with a wavelength ~380-450 nanometers.

Step-by-step explanation: Please mark Brainliest!

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