A Mall has 21 shops: 9 are pens, 7 are shoes, and 5 are watch shops. What is the probability that we will go shopping in pens or shoes shop?

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

The radius of the circle below intersects the unit circle at (3/5,4/5). what is the approximate value of theta? 0.6 radians 1.0 radians 36.9 degrees 53.1 degrees

Aflagpole broke in a storm. it was originally 8 1 81 feet tall. 2 8 28 feet are still sticking straight out of the ground, where it snapped, but the remaining piece has hinged over and touches the ground some distance away. how far away is the end of the pole from the base of the pole along the ground?