1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gelneren [198K]
3 years ago
8

there are 148 juniors and 272 seniors attending prom this year. if there must be three chaperones per 60 students, how many chap

erones are needed
Mathematics
1 answer:
valkas [14]3 years ago
3 0

21 chaperones are needed for 420 students.

Step-by-step explanation:

No. of juniors = 148

No. of seniors = 272

Total = 148+272 = 420 students

3 chaperones = 60 students

1 chaperone = \frac{60}{3}=20\ students

Ratio of chaperon to students = 1:20

Let,

x be the number of chaperons for 420 students.

Ration of chaperones to students = x:420

Using proportion

Ratio of chaperones to students :: Ratio of chaperons to students

1:20::x:420

Product of mean = Product of extreme

20*x=420*1\\20x=420\\

Dividing both sides by 20

\frac{20x}{20}=\frac{420}{20}\\x=21

21 chaperones are needed for 420 students.

Keywords: ratio, proportion

Learn more about ratios at:

  • brainly.com/question/4464845
  • brainly.com/question/4522984

#LearnwithBrainly

You might be interested in
1/4( -1 + 4)+3/5 please help ME missing work!
nignag [31]

Answer:

1.35

Step-by-step explanation:

I believe this is right but it could be wrong. Hope this helps! <3

3 0
3 years ago
Which expression can be used to represent the phrase “four less than seven”?
alexira [117]

Answer:

c

4-7 is four less than 7.

7 0
3 years ago
Read 2 more answers
On the number line below, the letters a and b are the same distance from 0. What is a + b?
jolli1 [7]

Answer:

The answer here would be 0.

Step-by-step explanation:

If a and b are both equal distances from 0, then adding the together would equal 0. Since a is the inverse of b,  using any number and its inverse will show you why the answer is 0. For example, if b is 9 then a would be -9. Adding these together equals 0.

5 0
3 years ago
Maggie takes three electives: art, Spanish, and creative writing. She calculated the mean absolute deviation of the points she e
stiv31 [10]

Answer:

i think its art

Step-by-step explanation:

6 0
2 years ago
Can You Please Help With Problem 2.
jok3333 [9.3K]
The answer is D. 3.3x2 and 2.75x2 then add the answers together.
5 0
3 years ago
Read 2 more answers
Other questions:
  • Select the correct answer from the drop-down menu.
    15·2 answers
  • Plz help with this problem plz
    15·2 answers
  • Find the value of x and y
    9·1 answer
  • The temperature at a point (x,y) on a flat metal plate is given by T(x,y)=19/(2+x^2+y^2), where T is measured in Celsuis and x,y
    5·1 answer
  • Plzzzz help quickly
    8·2 answers
  • Which graph could represent a constant balance in a<br> z<br> account over tim
    9·1 answer
  • M= -3 b= -1 slope intercept form ​
    6·1 answer
  • Factor 7w2−175.(1 point)<br><br> −7(w−25)<br><br> 7(w−25)<br><br> 7(w−5)(w+5)<br><br> 7(w−5)(w−5)
    6·1 answer
  • Andrew has $65.50. He is paid $11.50 for each earbud case he sells. He has a goal of earning $146. Write an equation to determin
    10·1 answer
  • This figure is the pre-image of a prism that has undergone a dilation with a scale factor of 3/4.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!