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iren2701 [21]
3 years ago
13

a school has 18 classes with 35 students in each class in order to reduce the class size 30 how much new classes much must be fo

rmed​
Mathematics
1 answer:
Ugo [173]3 years ago
4 0

Answer: 3 classes

If we removed 5 students from each of the classrooms, we would be able to keep the 18 classes and give them exactly 30 students. However, we would also have the leftover students to put into classrooms.

If there are 18 classrooms with 5 extra students from each, we can use 18*5 to find how many total students we have.

18 * 5 = 90.

If each class size is 30, we need to divide 90 by 30 to find how many classes we need.

90 / 30 = 3 classes

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What is the volume of a right circular cylinder with a radius of 5 cm and a height of 12 cm?
dexar [7]

Answer:

Answer C

Step-by-step explanation:

Formula

Volume = pi * r^2 * h

Givens

  • r = 5 cm
  • h = 12  cm

Solution

  • V = pi * 5^2 * 12
  • V = pi * 25 * 12
  • V = 300 pi

Answer = C

8 0
3 years ago
Mrs.Henderson had 7/12dozen eggs in her refrigerator.Then she used 1/6 dozen eggs to make a cake.What fraction of a dozen is lef
zhuklara [117]
Ok so to find the eggs left we need to subtract but with fractions, you need a common denominator. You can multiply 1/6 by 2 because 6·2=12 which will be the same denominator as 7/12. You must multiply the numerator by 2 as well so 1/6· 2/2= 2/12. Now subtract 7/12 - 2/12 and you have 5/12 eggs left. :)
5 0
2 years ago
Read 2 more answers
Find three consecutive even integers if three times the first integer is two times the third.​
drek231 [11]

Using a system of equations, it is found that the three consecutive even integers are -8, -6 and -4.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the three consecutive even integers are represented by:

n, n + 2, n + 4

The first integer is two times the third, hence:

n = 2(n + 4)

2n + 8 = n

n = -8

Thus:

n = -8

n + 2 = -8 + 2 = -6

n + 4 = -8 + 4 = -4

The integers are -8, -6 and -4.

To learn more about system of equations, you can take a look at brainly.com/question/26650649

6 0
2 years ago
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How do you find how many cups are in a gallon
Lisa [10]
First we need to find the volume of water that can be filled in water 
   Then we will use the equation that
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Then by using this we will calculate the amount of cup used by equalizing with litres and then by gallons and then calculate number of cups in gallons

8 0
3 years ago
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working together, 9 friends picked 23 2/5 bags of apple at an orchard. they divide the bags of apple equally between them. how m
krek1111 [17]
9 friends
23 2/5 bags of apples

23 2/5 = 23.4
23.4 / 9 = 2.6

each friend may take 2 3/5 bags
6 0
2 years ago
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