Answer:
Step-by-step explanation:
You can use Pythagoras Theorem,

∴
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Answer:
-2,4
Step-by-step explanation:
Answer:
x = 4y + 5
Step-by-step explanation:
x represents the total students in the class. We don't know how many teams of four there will be, so we represent that with y. 4y represents the total students in teams of 4. We know there is one team of 5, so that is added to 4y.
You posted a formula with no equation, there’s no way to answer your question