39 points plz need rewrite the expression below -2a(a+b-5)+3(-5a+2b)+b(6a+b-8) the coefficient of the a^2 term a)-3 b)-2 the coefficient of the ab term a)-4 b)4 c)8 the coefficient of the b term a)-2 b)2 c)14

How many real-number solutions does the equation have? -4x^2 + 10x + 6 = 0 a. no solutions b. two solutions c. infinitely many solutions d. one solution

What is (2.5a^8n)^3 · (0.4^7n)^3 can you plz simplify this quickly offering lots of points

After surveying students in her homeroom, katie decided to use a number cube to predict the probability that a randomly chosen student in her school planned to stay after school today for extracurricular activities. in katie’s simulation, a roll of 1 represents staying after school, while rolls of 2, 3, 4, 5, or 6 represent leaving school at the end of classes. according to katie’s model, what is the probability that three randomly chosen students will all stay after school for extracurricular activities today?