What is the answer for 12:59 = a:75

Afurniture store has 1,500 chairs in storage. a manager uses three delivery receipts to simulate samples to check 100 chairs and note the number of brown chairs. suppose the actual number of brown chairs is 1,080. about how many brown chairs are

What is the standard form of -5x^2+2x^4-11+x^3+3x

Which expression gives the area of the triangle shown below