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Elenna [48]
3 years ago
7

Solve this question ​

Mathematics
2 answers:
Natalija [7]3 years ago
8 0
I think the answer is 80
ryzh [129]3 years ago
7 0

Answer:

80

Step-by-step explanation:

Initial ratio:

Teachers to students

1 : 15

Ratio after:

Teachers to students

3 : 40

The number of students did not change, so we can make the students of the initial ratio and the students of the ratio after the same.

1 : 15 =  8 : 120

3 : 40 = 9 : 120

120 units = 1200

1 unit = \frac{1200}{120} =10

Initial teachers = 8 units = 8*10=80

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dedylja [7]

Answer:

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Step-by-step explanation:

the 'x' coordinate of E: (4+2)/2=3;

the 'y' coordinate of E: (-5+3)/2= -1.

8 0
2 years ago
What is the area of the composite figure? <br> A) 27 <br> B) 21 <br> C) 15<br> D) 30
polet [3.4K]
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How?
Break it into smaller pieces
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Hope this helps
3 0
3 years ago
Read 2 more answers
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300:1 or 300 gallons per hour
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3 years ago
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jasenka [17]

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297.3

Step-by-step explanation:

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6 0
2 years ago
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sveta [45]

Answer:

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Step-by-step explanation:

6 0
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