(Total for Question 16 is 2 marks) 17 Using algebra, prove that, given any 3 consecutive even numbers, the difference between
the square of the largest number and the square of the smallest number is always
8 times the middle number.​

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

Which expressions equal 9 when x=4 and y=1/3 a. x2+6y b. 2x + 3y c. y2-21x d. 5 (x/2) -3y e. 3x-9y

Why is causation so much more difficult to prove than correlation?