Write the equation of the ellipse in standard form that has the following characteristics: Vertices (2,1) (2,7) and co-vertices (0,4) (4,4)

Step-by-step explanation:

Equation of an ellipse elongated vertically in standard form is:    for where (h, k) is the center, a is the distance

from the center to a vertex, b is the distance from the center to a co-vertex.

In your problem, the center is at (2, 4),  a = 3 and b = 2

So, the equation is  

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons

answer: 177/8

step-by-step explanation: