The second side of a triangle is three times its first side, and its third side is five more than its first side. The triangle perimeter is 20 unit. What is the length of the second side? (idk why it says highschool lol)

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x, y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis

The water company charges a residential customer $41 for the first 3,000 gallons of water used and $1 for every 200 gallons used over 3000 gallons. if the water bill was $58 how many gallons of water were usedanswersa 3400 gallonsb 6000 gallonsc 6400 gallons d 7000 gallons

In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale