a manufacturing concern wants to estimate the average amount of purchase of its products in a month by the customer. if the standard deviation is rs 10, find the sample size if the maximum is not exceed rs 3 with the probability of 0.99​

Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.