Find the vertex of the parabola defined by the following equation. x^2+x-4

In a circle, a 45° sector has an area of 32π cm2. what is the radius of this circle? 32 cm 12 cm 16 cm 8 cm

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists