You are 5 feet tall and cast an 8-foot shadow. A lamppost nearby casts a shadow that is 20 feet. Which equation can you use to s
olve for the height (h) of the lamppost?
2 answers:
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Answer:
(Slope intercept form)
(Slope point form)
Step-by-step explanation:
The slope of the line can be calculated as following:
The the equation of the line in slope point form is:
Where (,
) is a point of the line.
Then you must susbtitute the point given and the slope and you obtain:
The intercept form is:
Where b is the y-intercept.
Solve for y from the equation of the line in slope point form obtained above, then:
Answer:
Step-by-step explanation:
Using foil method, Multiply the first term
Next, Multiply the Outer term in each parenthesis. (2x^2 and 7
Then, Multiply the Inner Terms (-3x,-4,7) in each parenthesis
Then multiply the last term (-4 and 7).
Combine it you have
which simplify to