If the perimeter of isosceles trapezoid ABCD is p, and , what is the value of y in terms of p ? A. 5p/6
B. 7p/6
C. 3p/14
D. 3p/7
E. 10p/7

How do i do this? i don’t understand

Evaluate cos2θ for cosθ = square root of 3/2

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.