Manufacturing and product development a a typical washing machine has several different cycles, including soak, wash, and rinse. the energy consumption of a washing machine is linked to the length of each cycle. a random sample of 21 washing machines was obtained, and the length (in minutes) of each wash cycle was recorded. the summary statistics are x 37.8 and cycle times is normal. a. find a 90% confidence interval for the true mean wash cycle time. write a solution trail for this problem

How many grams are in 8 kilograms? if 100 grams = 1 kilogram

Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps