How many elements are there in a power set (a) A = {ϕ}

(b) B = {a, b}

(c) C = {l, m, n}

(d) D = {4, 9}

Why is it difficult to find length of the hypotenuse the same way the length of the legs can be found?

The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is

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.