Find the y-intercepts of the parabola y = x2 + 8x +12

Apool measures 100 meters by 100 meters a toddler inside the pool and trows a ball 60 centimeters from one edge of the pool. how far is the ball from the opposite edge of the pool

If angle b measures 25°, what is the approximate perimeter of the triangle below? 10.3 units 11.8 units 22.1 units 25.2 units

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cot of 61.6