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Stels [109]
2 years ago
11

Someone please help.​

Mathematics
1 answer:
brilliants [131]2 years ago
8 0

Answer: 3,19 which is larger than the original

Step-by-step explanation: if you consider that the original average is 3 you can say that all 25 students have 3 siblings so the average is 3, if you add another students with 8 siblings and do some math (25*3+8)/26 its 3,19

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A right angled triangle has sides of length 9cm, 12cm and 15cm. Calculate its area in square centimetres.
Dmitriy789 [7]

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The formula to calculate the area of a right triangle is given by:

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