What divided by 5 equals negative 2

Me asap on # : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.

Tony has 7/8 of a candy bar he wants to split the bar into servings that are 3/10 of the bar how many servings can he make. step by step? ?

The weight of a small starbucks coffee is a normally distributed random variable with a mean of 340 grams and a standard deviation of 11 grams. find the weight that corresponds to each event. (use excel or appendix c to calculate the z-value. round your final answers to 2 decimal places.)highest 30 percent middle 70 percent highest 90 percent lowest 20 percent