To get the mean, you add all of the numbers, and then divide the answer by the number of numbers.
15+(-6)= 9
9+12= 21
(21+x= q )⬅️ignore this for now, that's where the unknown number would have been
The mean = 5, and the number of numbers is 4, so basically, you find 5•4=20
So take the 21 from before, and if you add -1, you get 20!
So, x= ➖1⃣!!!!!!! (That's a -1)
Answer:
it is rational number
Step-by-step explanation:
Decimals are not natural and whole numbers.
irrational numbers cannot be expressed by fraction but this question can be experssed by decimal so it is rational number not irrational
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Answer:
its 5
Step-by-step explanation:
