Equation: 3 (-2)^2 - 5(3) + 8 My calculator mainly says the answer is 5, but I need to show the work. Most of my work shows a different answer. Can someone show me the steps?

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Someone answer asap for ! 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

If m_b=mzd= 43, find mzc so that quadrilateral abcd is a parallelogram o 86 137 o 129 43 description