The greatest common factor of 10 and 20 is 10.
Answer:
B
Step-by-step explanation:
Of you put the values of c and y from B in the equation, then the result is,

here, 3 is less than 4, which is true.
But the result will come out as greater than 4 if you put other points in the equation, which is not true for the given condition.
Answer:
It's A.
Step-by-step explanation:
The length of the major axis is a + b where a and b are the distances from each focus to any point on the ellipse.
Answer:
D
Step-by-step explanation:
Since they are the same variables
Answer:
1/20
Step-by-step explanation:
(1/4) / 5
When dividing a fraction by a whole number
multiply the divisor by the number
4 * 5 = 20
(1/4) / 5 = 1/20