Amber's mean mark on five tests is 80.
2 answers:
Answer:
88
Step-by-step explanation:
The mean is the total sum of all the marks divided by how many there are.
68+81+74+89=312 Total of 4 tests
80×5 = 400 Total marks on 5 tests
400-312 = 88 Total marks on 5 tests - Total marks on 4 tests = 1 test
68+81+74+89+88 = 400
Answer:
The answer is 88.
Step-by-step explanation:
68+81+74+89+x/5=80
312+x/5=80
312+x=80*5
312+x=400
x=400-312
x=88
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Step-by-step explanation:
y=mx+b
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Hope this helps!
Answer:
Step-by-step explanation:
Yes
The odds ot landing on an odd or an even number are the same. So the probability of landing on an odd number is 50%.