A used-book store sells paperbacks for $2 and hardcovers for $5, including tax. Amanda wants to buy at least 6 books but only has $20. She uses the system to find the number of each type of book she should buy, where x is the number of paperbacks and y is the number of hardcovers, and shows the solution in the
graph.
2x + 5y < 20
12 +y > 6
Explain the error in Amanda's solution.

step-by-step explanation:

two pairs of adjacent sides are of equal length. this implies that one diagonal divides the kite into congruent triangles, and so the angles between the two pairs of equal sides are equal in measure. it also implies that the diagonals are perpendicular.

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.