## anonymous 3 years ago Can someone explain to me how it is possible to determine an answer for this question? http://i.imgur.com/ahpPs.jpg The waterslide one, I've had a go at it but there simply does not seem to be enough information (equations etc) to get answers. Any ideas?

1. anonymous

2. anonymous

The one underneath, Analysis Question 1.

3. anonymous

use tan theta= h1/ 5

4. anonymous

and $h1= \sqrt {l^2-25}$

5. anonymous

In order to use trig, you need an angle, but there is no angle listed in this question.

6. anonymous

coordinate of A is (16,0)

7. anonymous

The answer section in the back of the book states it is (15,0)

8. anonymous

hmm...wait a sec

9. anonymous

how come this cubic equation has got two roots only??

10. anonymous

let's say coordinate of A is (x1,0)...your cubic function will be (x-0)(x-8)(x-x1)

11. anonymous

but at x=0 value of cubic function is h1

12. anonymous

so the function is (x-h1)(x-5)(x-x1)

13. anonymous

now i am realising ...this question is really a good one :)

14. anonymous

@lgbasallote where are you...come here ..have some fun

15. anonymous

someone called?

16. anonymous

yea me....check out the question and help to figure this out ...please

17. anonymous

sorry. i hate math...i have no idea

18. anonymous

well i had been seeing that...you have solved mathematics for most of the time ...but it's fine....if you don't wanna get in to this

19. anonymous

i seriously do not have any idea. i'm just a primary school student.

20. anonymous

cool...