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y = 5x-4

Step-by-step explanation:

To solve this question you will need to use the point-gradient formula, which is

y−y1=m(x−x1)

First work out the gradient. which is m = y2-y1/x2-x1 = (-29-21)/(-5-5) = -50/-10 = 5

Sub m = 5 into the formula

y-y1 = m(x-x1)

Next sub one of the ordered pairs into the equation lets use (5,21)

y -21 = 5(x-5)

y-21 = 5x-25

y = 5x-4

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answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

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