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svetlana [45]
4 years ago
11

Required that there must be chaperones for every 25 how many chaperones must there be for 80 students

Mathematics
1 answer:
goldfiish [28.3K]4 years ago
3 0

Answer:

6 chaperones on 80 students.

Step-by-step explanation:

Here is the complete question: School guideline required that there must be 2 chaperones for every 25 students on a school trip. how many chaperones must there be for 80 students?

Given: There must be 2 chaperones on every 25 students.

       

Now, we will use unitary method to solve.

We know 2 chaperones = 25 students

∴ one student required \frac{2}{25}\ chaperones

Next for 80 students, we require= \frac{2}{25} \times 80 = \frac{160}{25}

∴ For 80 students, we require 6.4 \ chaperones, however, we cannot use decimal for number of person, so we can round off the number to 6 chaperones on every 80 students.

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skelet666 [1.2K]

Answer:

  • Part 2 - ∠EGF = 105°
  • Part 3 - ∠D = 65
<h3>________________________________________________</h3>

Step-by-step explanation for Part-2:

<u>We know that:</u>

  • ∠EFG = 32°
  • ∠AEG = 137°
  • ∠EFG + ∠FGE + ∠GEF = 180°

<u>Work:</u>

  • ∠EFG + ∠FGE + ∠GEF = 180°
  • 32 + ∠FGE + (180 - 137) = 180°
  • => 32 + ∠FGE + 43 = 180°
  • => 75 + ∠FGE = 180°
  • => ∠FGE = 180 - 75
  • => ∠FGE = ∠EGF = 105°

Hence, the measure of ∠EGF is 105°.

<h3>________________________________________________</h3>

Step-by-step explanation for Part-3:

<u>We know that:</u>

  • CD = CA
  • This triangle is an isosceles triangle.
  • ∠D = ∠A

<u>Work:</u>

  • 50 + ∠D + ∠A = 180
  • => ∠D + ∠D = 130
  • => 2∠D = 130
  • => ∠D = 130/2
  • => ∠D = 65

Hence, the measure of ∠D is 65°

<h3>________________________________________________</h3>
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2 years ago
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Answer:

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Step-by-step explanation:

There are four positive counters, and there are 6 negative counters in a group. So I came to the conclusion they are being added.

4 + -6

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