Really easy maths !
jean decides to buy a watch. 20% vat is added to the price of the watch, which now costs £285
how much does the watch cost without vat

b) the watch is now on sale at 28% off. whats the new price of the watch? ?

120% is 285 pounds

divide by 120

1% =

times this number by 100 to get the answer

(sorry i dont hv a calculator rn and im in a hurry)

b) 100-28 = 72%

use the value for 1% from before and times by 72

72 dollars?

Step-by-step explanation:

Im not that good at math so72 dollars maybe

answer: 4 (:

step-by-step explanation:

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)