a ladder 30m long, rests against a vertical wall. if the foot of the ladder is 24m away from the wall, how far up the wall is the ladder.

answer is 18

Step-by-step explanation:

use Pythagoras theorem with is a²+b²=c²

if u draw the ladder against the wall you'll get a right triangle .

c is hypotenus which is the longest side of the triangle so it is 30

so you'll get 24²+b²=30²

rearrange to b²=30²-24²

you'll get b=

therefore that is 18

hope you understood :)

you would need to know all the numbers that are on there

step-by-step explanation:

1. 3.4/4

2. 0.8/7

3. 0.5 x 3

4. 0.9 x 6

5. 10.8

6. 2.35

7. 0.567

8. 9.35

9. 0.02

10. 0.06

11. 0.16

12. 0.42

13. 0.63

14. 5.6

15. 8.1

16. 9.9

17. 0.28

18. 0.48

19. 0.27

20. 0.49

21. 0.45

22. 0.72

23. 0.9

24. 0.88

25. 0.75

26. 0.16

27. 0.328

28. 0.495

29. 0.72

30. 1.068