9. Compreu dos productes i us costen 220 €. La setmana següent feu la mateixa compra i, com que el primer article està rebaixat en un 10 % i el segon un 20 % respecte a la setmana anterior, només us costa 186 €. Quant us costarà la mateixa compra si en una altra ocasió els preus estan rebaixats un 10 % i un 20 %, respectivament, en relació amb els preus de la segona setmana? (R: 157'80 €)

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.

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at link to the chart is here

The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is