The sum of the two digits of a number is 9. If the tens digit is one-half the units digit, what is the number?
2 answers:
Answer:
would complete the system
Number is 36
Step-by-step explanation:
Let t = the tens digit, u = the units digit
We have the sum of the two digits of a number is 9
t + u = 9
We also have the tens digit is one-half the units digit

Substituting

t + 6 = 9
t = 3
So the number is 36.
Answer: correct answer is t=1/2u
Step-by-step explanation:
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