Select the polynomial that is a perfect square trinomial.
a. 49x2 − 8x + 16
b. 4a2 − 10a + 25
c. 25b2 − 5b + 10
d. 16x2 − 8x + 1

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

What is the probability of throwing several dice with sum equal to 6 (six)? show the ways of possibilities for sum 6 (as the numerator) and the ways of throwing n dices for n = 1, 2, 3, 4 or 5 as denominator for all the questions to earn full credits. (a)throw one die, (b) throw two dice, (c) throw three dice (d) throw 4 dice, (e) throw 5 dice