A. think of polynomials as a system. for each of the following operations, determine whether the system is closed under the operation. in each case, explain why it is closed or provide an example showing that it isn’ 1. addition 2. subtraction 3. multiplication 4. division

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212

Sam is picking fruit from a basket that contains many different kinds of fruit. which set of events is independent?

The measures of the angles in △abc are given by the expressions in the table. angle measure angle a 65° angle b (3x−10)° angle c (2x)∘ find the value of x. then find the m∠b and m∠c.