Helen is organizing her books and putting them on shelves. She put 20 books on the first shelf, 32 books on the second shelf, 44 books on the third shelf, and 56 books on the fourth shelf. If this pattern continues, how many books will Helen put on the fifth shelf

step-by-step explanation:

a rhombus is a parallelogram enjoying his symmetry.

28

step-by-step explanation:

because that's the answer

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus