In a box of 20 pens, 4 of them are red, 10 are blue and rest are black what percentage of pens are black

Jess is in art club and they have two leadership positions (President and Vice President) there are 15 members. How many members can take each spot?

What happens when you go from - 2 to 0? are you multiplying by 1/2? is it geometric or arithmetic?

which of the following could not be the measures of the angles of a triangle? A. 30^o - 120^o - 30^o B. 40^o - 40^o - 100^o C. 60^o - 60^o - 60^o D. 70^o - 50^o - 70^o

Rectangular prism container hold s about 1320ml of water. It's length, width and height are consecutive whole numbers. One of its dimensions is 10cm what are the dimensions of the prism?

Jill writes 2•4=8 and the teacher marked it wrong explain her error

The mean length of 7 books is 258 pages. the longest book has 294 pages. what is the mean length of the other 6 books

A pyramid has n sides what is the expression for the total number of sides

The sum of Sally and Beth's age is 60. Six years ago, Sally was 3 times as old as Beth. What are their present ages?

A circle has a radius of 37 units and is centered at (1.3, - 3,5). What is the equation of the circle?

An arithmetic sequence is defined by the general term tn = - 5 + (n - 1) 78, where n ∈N and n ≥ 1. What is the recursive formula of the sequence?