A class has 30-40 students. Each boy in the class bring 15 chocolate bars for a class party to celebrate Teacher's Day. The chocolate bars are shared equally among the 20 girls of the class and their form teacher with no leftovers.
(i) How many students are there in the class?
Detailed steps please!

Answers

Answer 1

9514 1404 393

Answer:

  34

Step-by-step explanation:

In order to divide some multiple of 15 chocolate bars evenly by 21, the number of bars must be a multiple of the LCM of 15 and 21, which is 105. That number is 7 times 15, indicating the number of boys in the class must be a multiple of 7. The only number between 30-20 = 10 and 40-20 = 20 that is a multiple of 7 is 14.

There must be 14 boys in the class, so 34 students in total.

__

The boys brought a total of 210 chocolate bars, so each girl and the teacher received 10 of them.


Related Questions

Ranier's vine grew 4 1/2 inches in May and 8 3/4 inches in June. How many inches did Ranier's vine grow those two months?

A. 12 2/3
B. 12 1/4
C. 13 1/4
D. 13 2/3

Answers

Answer:

13 and 1/4

Step-by-step explanation:

What is another way to write the expression ​r⋅(18−3)​?
A. r⋅18−3
B. (r⋅18)−3
C. (r⋅18)−(r⋅3)
D. (r⋅18)⋅3

Answers

Answer: the is c

Step-by-step explanation:

example

3(x-7)+1

3 multiply anything

3x-21+1

add 1 to -21 equal -20

3x-20

HELP PLZZZZZ< EMERGENCYYYYYY

Answers

Answer:

the answer for this is 0

Answer:

8y - 8y = 0

Step-by-step explanation:

I think it's 0 because 8 cancels out 8 and 0 cancels 0 so it ends up leaving nothing which is literally 0

Write an expressions for the missing dimension of each shaded figure and a multiplication expression for it's area

Answers

Answer:

alrighty then, x has to be 14, so x-3=11 which means the question mark would be 3. you can do the rest yourself, I believe in you!

Step-by-step explanation:

To solve this problem, we are required to write and expression to solve for the missing side in each figure.

Side of a Square

To find the missing side of the square, we can simply write it as

[tex]15 = h + x\\x = (15 - h)m[/tex]

For the triangle, to find the missing side let's calculate the area of the triangle

[tex]area = \frac{1}{2} base * height\\area = \frac{1}{2} * 5 * 12\\area = 30m^2[/tex]

But for the length of the missing side, we can simply write it as

[tex]b = 10 + x\\x = (b - 10)m[/tex]

The expressions for the missing sides are;

x = (15- h)mx = (b - 10)m

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There are 3 cats in a room and no other creatures. Each cat has 2 ears, 4 paws, and 1 tail. Which of the following shows a ratio of paws to ears to tail?

A. 1 : 2 : 4
B. 2 : 4 : 8
C. 4 : 8 : 2
D. 8 : 4 : 2

Answers

A. 1:2:4
None of the other ones fit correctly.

Answer: D - 8:4:2

Step-by-step explanation: There will always more paws to ears. And there will always be more ears to tails. Only one where this is shown is in letter D.

Can someone pls help me

Answers

Answer:third graph (open circle on 518, colored to the right)

Step-by-step explanation:The record is 518 cm. That means that 518 cm has already been accomplished. Anything less than 518 cm is not a record. 518 cm is also not a record. Only distances greater than 518 cm are records

!!!!!! hElP mE PleAsE !!!!!!

Answers

What question do you need help on?
for the first one 86.637- 28.56 the answer is 58.077 because you line the numbers up and then subtract

The question is in picture

Answers

Number one: 122
Number two: 51.111
Number three: -41 degrees
I think it’s B
Hopefully this helps!!

The water level in Lake Siscal dropped 6 3/4 inches in the fall. In the winter, the level rose 4 2/3 inches. Which expression shows one way to calculate the total change in the water level in inches during the fall and winter?

A. -6 3/4 + 4 2/3
B. -6 3/4 - 4 2/3
C. 6 3/4 + 4 2/3
D. 6 3/4 - 4 1/3

Answers

Answer:
A. -6 3/4 + 4 2/3
D because your answer need to be in positive

solve for x: x/3 = -48

Answers

Answer:

-144

Step-by-step explanation:

x=-48 times 3

Answer:

x=-144

Step-by-step explanation:

multiply both sides by 3

3x/3=3(-48)

simplify

x=-144

Which of the following is not a step necessary to create a triangle from three given sides?

A.)Draw the remaining sides of the triangle by connecting the endpoints of the segments with the intersection point of the circles.
B.)Measure the final angle formed. Ensure it is greater than 90°.
C.)Create a circle whose center is one of the endpoints of the segment. The length of the radius of the circle is one of the other given lengths.
D.)Draw a segment with one of the given lengths.

Answers

Answer:

c

Step-by-step explanation:

I think it’s C, but i’m not 100% sure!

have a lovely day :D

Plz help I’m giving all my points! Whoever answer all of them gets brainliest

Answers

Answer:

19. 11

Step-by-step explanation:

thats the one I know!!! hope that helps

solve for x: 1.44 = 0.36 + x

Answers

X=1.08
Please give branliest answer

Answer:

1.08

Step-by-step explanation:

u have to subtract 1.44-0.36

The art teacher has 1 gallon of paint which is enough for 2/3 of the class to complete a project how many gallons of paint does she need for the whole class

Answers

Answer: 1.5 gallons

Step-by-step explanation:

I hope this helps!!!

1.5 gallons hope you get a good grade

9 fourths = ______ divided by 4 (Fill In The Blank

Answers

Answer:

9 ÷ 4

Step-by-step explanation:

PLZ GIVING BRAINLIEST ASAP

Answers

Answer:

im not sure

Step-by-step explanation:

im not sure what to do like what to start off with

Answer:

D.

Step-by-step explanation:

Form an equation. 593 = 418 + 12.50d

The variable d represents how many days she needs to pet-sit for.

Use the subtraction property of equality by removing 418 from both sides.

593 - 418 = 418 - 418 + 12.50d

175 = 12.50d

You will need to divide both sides by 12.50 to get the variable by itself.

14 = d

You've gotten the answer now, 14.

The last brainliest, Please show work

Answers

Answer: The speed of the car is 45.3 miles per hour.

Step-by-Step Explanation: Let 'x' be the speed of the car.

60 × 2/3 = 120/3 = 40

30 × 1/5 = 151/5

151/5 /40 = x / 60

151 / 200 = x / 60

=> x = (151×60) / 200

=> x = 45.3

Answer:

The car was traveling at an average speed of 45.3 miles per hour.

Step-by-step explanation:

We need to figure out how many minutes are in 2/3 of a hour. If we divide 60 minutes by 3 we get 20 minutes, so 2/3 of 60 minutes is (20 minutes x 2) 40 minutes.

We now know that the car traveled 30.2 miles in 40 minutes. We want to know if it traveled for 60 minutes, what would the average speed be. The ratio will be the same, so we want to solve for x (miles):

30.2/40=x/60

We then cross multiply:

30.2x60=40(x)

1,812=40(x)

Divide each side by 40

1,812/40 = x

x=45.3

which pair do both decimals represents rational numbers?

Answers

The answer would be C. .684 and 1.222...


Explanation-
.684 would be a terminating decimal which is considered rational, and 1.222... would be a repeating decimal which is also rational
The answer is C


Explanation:

solve for x: x + 5 = -34

Answers

Answer:

x=-39

Step-by-step explanation:

Answer:

- 39

Step-by-step explanation:

-34 - 5 = - 39

True or false, the two expressions are equivalent.

3(4a - 2) and 12a - 6

Answers

Answer:

its true because 3(4a - 2) is 12a - 6

Answer:

True

Step-by-step explanation:

its true because 3(4a - 2) you would do 3 x 4a and instead of 4 - 2 you would change it to 4 + 2 after that you would do 3 x 4a = 4a + 2 which gives you

12a - 6

so yes they are equivalent

Hope this helps

Find the slope please

Answers

Answer:

5/3

Step-by-step explanation:

i think its 5/3 bc if you do rise over run from -1 to the next point you get 5/3 but I'm not sure

5/3 is the slope ..

lalaland1122????!!!!!!!!!!

Answers

Answer:

hi

Step-by-step explanation:

welcome over board have a good time answering and asking questions

PLEASE HELP! I ONLY NEED TO DO 3 MORE ASSIGMENTS AND I'M STUCKKK!

Answers

Answer:

40

Step-by-step explanation:

(11 + 4) / 3 * sqrt(64) =

= 15/3 * 8

= 5 * 8

= 40

Answer:

40 i think ?

Step-by-step explanation:

im not 100 percent sure this is correct but i just followed pemdas. i added 11 and 4 then divided that by 3, which was 5, then i figured out the square root of 64 which is 8 then multiplied 5 by 8 which is 40

Help! Help! Helpppp! ahah i suck at math

Answers

Answer:

2.95 spent

Step-by-step explanation:

Add all four of the amounts and divide by the 4 weeks.

15.40-21.95-17.80+12.55=-11.80

-11.80/4=  - $2.95 spent

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Answers

Answer:

s = 7t

Step-by-step explanation:

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Write an equation, in point-slope form, of the line that passes through the point (4, -3) with a slope -7.

Answers

Answer:

7=m+3

Step-by-step explanation:

7=m+3 hope this is right

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Answers

Answer: 19

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

The range id the dif ference between the lowest and highest values

so its 25-6=19

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers.
Click and place the simplified expression after its original expression.

1. 5x +3x
2. 7x^2 - 5x^2
3. 2xy +4xy
4. 8y - 3y

2x^2
5y
6xy
8x

Answers

5x+3x=8x
7x^2-5x^2=2x^2
2xy+4xy=6xy
8y-3y=5y

The solutions to the given expressions are given below:-

1. 5x +3x            ⇒   8x

2. 7x²- 5x²         ⇒   2x^2

3. 2xy +4xy       ⇒   6xy

4. 8y - 3y           ⇒   5y

What is an expression?

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

The expressions will be solved as:-

1. 5x +3x

The sum of 5x and 3x is equal to 8x.

5x +3x = 8x

2.. 7x²- 5x²

The substraction of 7x² and 5x² is equal to 2x².  

7x²- 5x²  = 2x²

3. 2xy +4xy

The sum of 2xy and 4xy is equal to 6xy.

2xy +4xy = 6xy

4. 8y - 3y

The subtraction of 8y and 3y is equal to 5y.

8y - 3y = 5y

To know more about expression follow

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(05.02) PLEASE ACTUALLY ANSWER AND EXPLAIN WELL!! :)
In the figure below, angle y and angle x form vertical angles. Angle y forms a straight line with the 80° angle and the 60° angle.

Write and solve an equation to determine the measure of angle x. (5 points)

Answers

Answer:

x = 40°

Step-by-step explanation:

Straight angle is equal to 180°

Angle x, 60° and 80° form a straight angle.

Then we have following equation to solve for x:

x + 60° + 80° = 180°x + 140° = 180°x = 180° - 140°x = 40°
X = 40 degrees

Hope this helps!!

Four cars are driving down the road, each at a constant speed.

Car A drives 6 miles in 8 minutes
Car B drives 7 miles in 10 minutes
Car C drives 10 miles in 12 minutes
Car D drives 12 miles in 15 minutes

Which car is driving the fastest?
A. Car A
B. Car B
C. Car C
D. Car D

Answers

Answer:

Step-by-step explanation:

D:Car D

Answer:

Car a is it...

Step-by-step explanation:

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