The slope of line CD is 4/3. which segments are perpendicular to line CD

Which of the following is true for the relation f(x)=2x^2+1

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick

Gabrielle's age is three times mikhail's age. the sum of their ages is 40 . what is mikhail's age? __ years old