Answer:
Step-by-step explanation:
Hello,
Question 15
We can search x such that:

There is 1 solution.
Question 16
Again, we search x such that:
There are two solutions.
Hope this helps.
Do not hesitate if you need further explanation.
Thank you
Answer:5
Step-by-step explanation:
21/2 is the answer I think!
Answer:
a)ab=10cm,r=10cmhgggkoifytewubbbcgkjjgyuuresgbvcguytrewsdyoohfutrfhje