Answer with explanation:
Rule of reflection along line, y=x.
Suppose a point (a,b) is reflected along line, y=x,the coordinates of point after reflection along the line will be (b,a),that is abscissa and ordinate interchange their place, after reflection.
Coordinates of point D =(3,1)
→→Coordinates of point D(3,1) ,after reflection along, line, y=x, will be=(1,3).
Option A→ (1,3)
Let's set up a formula for this, where x is the amount of dvds he started with:
x-45+10=15
x-35=15
+35 +35
x=50
He had 50 DVDs to begin with.
Check
50-45+10
=15
Proportion women /men = 2/7 = x/490 7x= 2· 490 :7
X = 2·70 = 140
Yo sup??
we can solve this question by applying trigonometric ratios
cos59=CB/CD
CD=CB/cos59
=7.8
Hope this helps.
The answer to this question is 8.6 or c
