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## anonymous one year ago A 12-foot ladder is leaning against a wall. The bottom of the ladder is 5 feet away from the bottom of the wall. Approximately how high up the wall does the top of the ladder reach? A. 2.4 feet B. 7.0 feet C. 13.0 feet D. 10.9 feet

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1. anonymous

Is it 10.9 feet?

2. anonymous

@Data_LG2 are you good with math??

3. anonymous

if you are can you help me?

4. rishavraj

@Hermitberg yup its 10.9 .....

5. anonymous

ok tahnk you! :D

6. anonymous

can you help me with some others?

7. rishavraj

hmmmm i shall try....

8. anonymous

A tree is 132 inches tall. The distance from the top of the tree to the tip of the tree's shadow is 166 inches. Approximately how long is the tree's shadow? A. 212 inches B. 149 inches C. 101 inches D. 34 inches http://static.k12.com/calms_media/media/1422500_1423000/1422752/1/1027944e04f03ab3880b4c7164012303b3883749/MS_PA_131002_171201.jpg

9. anonymous

is it A. ??

10. anonymous

if you don't want to click on the link I can try to draw it

11. rishavraj

nah its not A....

12. anonymous

ok

13. anonymous

maybe it is B. ??

14. rishavraj

oooo no its not tht...... http://prntscr.com/7hvckj

15. anonymous

oh its C. 101 inches

16. rishavraj

yeah it is....

17. anonymous

cool thanks

18. anonymous

The correct answer is D. You use Pythagorean identity $$x^2 + y^2 =c^2$$ c = 12 x = 5 $$5^2 + y^2 =12^2$$ $$y^2 =12^2 - 5^2$$ $$\sqrt{y^2} =\sqrt{12^2 - 5^2} = \sqrt{119} = 10.9$$

19. anonymous

Just wanted to show the work just in case someone searches the question and see this :-)

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