SOLUTION: the tens digits of a certain number is 7 less than the u digit .the sum ofnits the squares of the two digits is 85.find the number.with justification

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: the tens digits of a certain number is 7 less than the u digit .the sum ofnits the squares of the two digits is 85.find the number.with justification      Log On


   



Question 1146573: the tens digits of a certain number is 7 less than the u digit .the sum ofnits the squares of the two digits is 85.find the number.with justification
Found 2 solutions by richwmiller, josgarithmetic:
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
What?
What is "u digit"?
What is "ofnits"?
This appears to be a messed up version of Numbers_Word_Problems/1146571
and Numbers_Word_Problems/1146572 which have been answered.

Answer by josgarithmetic(39613) About Me  (Show Source):
You can put this solution on YOUR website!
should be written like this:

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The tens digits of a certain number is 7 less than the units digit . The sum of the squares of the two digits is 85. Find the number with justification.
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You can use one variable or two variables.


Let u be the ONES or UNITS digit.
First sentence means digits are u-7 and u.
Second sentence means %28u-7%29%5E2%2Bu%5E2=85.

You do the rest.