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avanturin [10]
2 years ago
15

PLEASE HELP!

Mathematics
2 answers:
yan [13]2 years ago
5 0

Answer:

See below ~

Step-by-step explanation:

<u>a)</u>

  • Mean = 17 + 19 + 25 / 3
  • Mean = 61/3
  • <u>Mean = 20.3</u>

<u>b)</u>

  • Mean = 38 + 36 + 34 + 32 / 4
  • Mean = 140/4
  • <u>Mean = 35</u>

<u>c)</u>

  • Mean = 8.3 + 2.6 + 7.4 + 1.8 + 9.5 / 5
  • Mean = 29.6/5
  • <u>Mean = 5.92</u>

<u>d)</u>

  • Mean = -5 + 2 - 1 + 0 - 9 + 4 / 6
  • Mean = -9/6
  • <u>Mean = -1.5</u>
Anika [276]2 years ago
3 0

Mean=Sum of data/No of data

#a

  • 17,19,25

Mean

  • 17+19+25/3
  • 61/3

#b

  • 38,36,34,32

Mean:-

  • 38+36+34+32/4
  • 140/4
  • 35

#c

  • 8.3,2.6,7.4,1.8,9.5

Mean

  • 8.3+2.6+7.4+1.8+9.5/5
  • 29.6/5
  • 5.92

#d

  • -5,-2,-1,0,-9,4

Mean

  • -5+2-1+0-9+4/6
  • -9/6
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prohojiy [21]
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4 0
3 years ago
A crepe recipe calls for 2 eggs, 1 cup of flour, and 1 cup of milk. How much flour would you need if you use 5 eggs?
nataly862011 [7]

Answer: 2.5 cups of flour is needed for 5 eggs.

Step-by-step explanation:

The crepe recipe calls for 2 eggs, 1 cup of flour, and 1 cup of milk. This means that the ratio of eggs to cup of flour to cup of milk required is 2:1:1

Therefore, if you use 5 eggs, the proportions would increase by 2.5. Multiplying by 2.5, it becomes

5 : 2.5 : 2.5

Therefore, you would need 2.5 cups of flour for 5 eggs.

6 0
3 years ago
Read 2 more answers
The photography club decided to go on a field trip to the Andy Warhol museum. They had to break into smaller groups once they go
Diano4ka-milaya [45]
A)
Let x represent the cost of 1 student, and y the cost of 1 teacher.

B)
In the first group, there's 25 students and 2 teachers. Their total cost is $97.50
So 25x + 2y = 97.50
In the second group, there's 32 students and 3 teachers. Their total cost is $127
So 32x + 3y = 127

We get the following system of equations:
25x + 2y = 97.50 (1)
32x + 3y = 127 (2)

C)
25x + 2y = 97.50 (1)
32x + 3y = 127 (2)

In equation (1)
25x + 2y = 97.50
25x + 2y - 2y = 97.50 - 2y
25x = 97.50 - 2y
25x / 25 = 97.50/25 - 2y/25
x = 3.9 - (2/25)y

In equation (2), let's replace x by its algebraic value
32x + 3y = 127
32(-2/25y + 3.9) + 3y = 127
11/25y + 124.8 = 127
11/25y + 124.8 - 124.8 = 127 - 124.8
11/25y = 2.2
(11/25y) / (11/25) = 2.2 / (11/25)
y = 5

x = -2/25y + 3.9
x = -2/25 * 5 + 3.9
x = 3.5

So the cost of each student is $3.5, and the cost of each teacher is $5.

Hope this helps! :)




4 0
3 years ago
Pls help i will reward crown to the first person who is right!!!!
EleoNora [17]

Answer:

x=84

Step-by-step explanation:

thi is the answer of the questions

6 0
2 years ago
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