# Alegebra 1

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If all the vertices of a triangle are on the circle and one side of the triangle is the diameter of the circle it is a right angle. Find the length of the diameter (AC) if Ab =8 and BC = 15.

• Alegebra 1 -

The diameter is the longest side, and the longest side of a rt. triangle is
the hyp.

(AC)^2 = 8^2 + (15)^2 = 289,
AC = 17.

• Alegebra 1 -

A BIKE RENTAL SHOP CHARGES \$8 TO RENT A BIKE, PLUS \$1.50 FOE EVERY HALF HOUR YOU RIDE. IF THE SHOP CHARGES YOU AND YOUR FRIEND A TOTAL OF \$25, HOW MANY HOURS DID YOU RIDE?

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