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3 years ago

Graph the equation by plotting three points. If all three are correct, the line will appear. 2y = 5x + 11

Mathematics

1 answer:

slega [8]3 years ago

4 0

Pick the following

x = 0 in which case

2y = 11 and

y = 11/2

y = 5.5

============

x = 1

2y = 5x + 11

2y = 5*1 + 11

2y = 5 + 11

2y = 16

y = 8.

==========

x = - 2 and x = - 10 are done the same way.

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Paul and jose are trying to measure the height of a tree. paul is standing 19m from the foot of the tree and measures the angle

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Now we can build a right triangle between Paul and the tree and another one between Jose and the tree as shown in the figure. Lets use cosine to find h in Paul's trianlge:
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Now we can use the law of sines to find the distance $x$ between Paul and Jose:
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Now that we know the distance between Paul and Jose, the only thing left is add that distance to the distance from Paul and the base of the tree:
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We can conclude that Jose is 33.9m from the base of the tree.