Maria solved the equation -5 n = -9 . her answer was n = 1 . she is fairly confident about her answer, but wants to do a quick check of her solution using estimation. which of the following shows a good check of her answer? 1 -6(2) = -12 2 -5(-2) = -10 3 -5(2) = -9 4-5(2) = -10

In the proof of the triangle angle sum theorem, you must draw an auxiliary line. which construction must you use to draw this line?

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.