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Maths Puzzle
Numerical Ability
A roast was cooked at 325 °F in the oven for 4 hours. The internal temperature rose from 32 °F to 145 °F. What was the average rise in temperature per hour?
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Can you please let me know if I am correct.
(x-3)squared (y-2)squared
------------ + ------------- = 1
9 4
is this an ellipse?
does a negative number x a negative number equal a positive number?
ex: -4x-4=
If so, can you explain the formula? Thank you