Answer:
Positive thread.
(It's making a positive slope.)
Equation of an ellipse
→having center (0,0) , vertex (
and covertex
and focus
is given by:

As definition of an ellipse is that locus of all the points in a plane such that it's distance from two fixed points called focii remains constant.
Consider two points (a,0) and (-a,0) on Horizontal axis of an ellipse:
Distance from (a,0) to (c,0) is = a-c = 
Distance from (-a,0) to (c,0) is = a + c = 
a -c + a +c
= a + a
= 2 a →(Option A )
10:21
There are 10 males and males plus females equal 21
Answer:
4.4
Step-by-step explanation:
10.6 + x = 15
x = 15 - 10.6 = 4.4