Name the quadrilateral that has a right angle and four congruent sides. A. Parallelogram
B. Rectangle
C. Rhombus
D. Square

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y