Which equation represents:
"an unknown integer, multiplied by two times itself, plus two times a different unknown integer, equals negative 20."
a) 2x^2 + 2xy + 20 = 0
b) 2x^2 + 2xy − 20 = 0
c) 2x^2 − 2xy + 20 = 0
d) 2x^2 − 2xy − 20 = 0

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189

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

Set up and solve a proportion for the following application problem. if 55 pounds of grass seed cover 404 square feet, how many pounds are needed for 7272 square feet?