Answer:
0
Step-by-step explanation:
This question is impossible to answer
Answer:
it says 8
Step-by-step explanation:
X equals 16
12+16=28
28 divided by 2 = 14
Answer:
30% of the swimmers won a ribbion
and 70% didnt
Step-by-step explanation:
Number: n
square of number: n^2
sum of n and n^2 is n+n^2=20
Rewriting this equation, we get n^2+n-20=0 = (n+5)(n-4) = 0
Then n+5=0 and n-4=0, so n = -5 and n = 4.
You must check both results. It could happen that both are correct, or that only one is correct.
