15x+40=115
15x+40-40=115-40
15x=75
15/15 x=75/15
x= 5
Answer:
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Step-by-step explanation:
<span>-13950 there you go!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</span>
Let's take any edge length l. The diagonal has length

. In our case it's