Answer:
8.7
Step-by-step explanation:
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First order the numbers from least to greatest.
8,12,31, 45, 45,47, 48, 51,55
Min: 8
Q1: 21.5
Q2: 45
Q3: 49.5
Max: 55
To find Q1 find the average of the lower half. (12 + 31)/2
43/2 = 21.5
To find Q3 find the average of the upper half.
(48+51)/2= 49.5
Answer:a = -5 and b = -7
Step-by-step explanation:
Answer: £14.94
Step-by-step explanation:
36 cartons at £1.56 for 4 = 14.04
2 cartons at £45p = 0.90
You can change them around up to 144 times.