You have 2 blue pens one red pen and two black pens. You randomly choose one of the 5 pens shown. Your friend randomly chooses one of the remaining pens. What is the probability that you and your friend choose a blue pen? 1. 1/20
2. 1/5
3. 2/5
4. 1/10

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

The formula for the lateral area of a right cone is la = rs, where r is the radius of the base and s is the slant height of the cone.which are equivalent equations?

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units