Step-by-step explanation:
(5,4) is the coordinate of the point j after rotation
Answer:

Step-by-step explanation:
Given data
Number of balls= 480
we are told that 50%(half) of the balls are put back every 1
let the number of hours be x
and let the remaining ball be y after x hours
Hence the expression is given as

Answer:
I and IV only.
Step-by-step explanation:
There are 3 similar triangles in the diagram, so corresponding sides are in the same ratio. You can identify corresponding sides by checking that the angles opposite them are congruent.
Answer:
x=17.5 or 18,y=12.5,or 13
Step-by-step explanation:
20-15 = 5
5÷2 = 2.5
15+2.5 = 17.5
15-2.5=12.5