In a board game, Kimberly had accumulated 1200 points. Then she gained 400 points on the next turn. Her score point is?

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.