What does the random variable for a binomial experiment of n trials measure?

(a) the random variable measures the number of successes out of n trials.
(b) the random variable measures the standard deviation of n trials.
(c) the random variable measures the mean of n trials.
(d) the random variable measures the number of failures out of n trials.

Yesterday, george drank 1 small bottle and 2 large bottles, for a total of 1,372 grams. the day before , he drank 1 small bottle and 1 large bottle, for the total of 858 grams. how many grams does each bottle hold?

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

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.