You can use the Pythagorean theorem to answer this. The diagonal is the hypotenuse of the right triangle that is formed. So, your equation will look like (h is height):

We have to solve for h:


You can plug it into a calculator, and you get approximately 19.105. The answer closest to that is
B. So, that's your answer! Hope it helps. If anything doesn't make sense, hmu!
Answer:
infinite solutions
Step-by-step explanation:
any equation that is like that has infinite solutions such as 7=7 or 2=2
Answer:
B and E
Step-by-step explanation:
The axis of symmetry would be x=0