The function f(x) = -5x2 + 13x + 6 represents the height, in meters, of a coin x seconds after it is thrown into the air. What is the maximum
height of the coin?
A 6.25 meters
B. 12 meters
C. 14 meters
D. 14.45 meters
HEL

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

It is e) i am not sure if you have any questions or need any

The principal, real, root of: 50−−√2=7.071067817.07106781−7.0710678150 is not a perfect square