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3 years ago

What is the point on the line perpendicular to the given line, passing through the given point that is also on the y-axis?

Mathematics

2 answers:

Gemiola [76]3 years ago

6 0

Answer:The answer is C

Step-by-step explanation:

olasank [31]3 years ago

6 0

Answer:

C is correct, just got it right

Step-by-step explanation:

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You are situated 300 feet from the base of Tower Glitz Plaza watching an external elevator descend down the side of the building

nordsb [41]

Answer:

18.66 ft/s

Step-by-step explanation:

The distance between you and the elevator is given by:

$h=\sqrt{x^2+y^2}$

The rate of change for the distance between you and the elevator is given by:

$\frac{dh}{dt}=\frac{dh}{dy}*\frac{dy}{dt}$

$-16=\frac{dh}{dy}*\frac{dy}{dt}$

$\frac{dh}{dy}=\frac{d}{dy} (\sqrt{x^2+y^2})\\$

Applying the chain rule:

$u=x^2+y^2\\\frac{dh}{dy}=\frac{d\sqrt u}{du} *\frac{du}{dy}\\\frac{dh}{dy}=\frac{1}{2\sqrt u} *2y\\\frac{dh}{dy}=\frac{y}{\sqrt {(x^2+y^2)}}$

Therefore, at x=300 and y = 500, dy/dt is:

$-16=\frac{y}{\sqrt {(x^2+y^2)}}*\frac{dy}{dt}\\-16=\frac{500}{\sqrt {(300^2+500^2)}}*\frac{dy}{dt}\\\frac{dy}{dt}=-18.66\ ft/s$

The elevator is descending at 18.66 ft/s.

7 0

3 years ago

Which accurately labels the cytoplasm?<br><br> W<br> X<br> Y<br> Z

bogdanovich [222]

<h2>Hey there! </h2>

<h2>The accurate answer is:</h2>

<h3>Option Y</h3>

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3 years ago

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What is 5/8 expressed as a decimal?

Lelu [443]

Answer:

The answer would be 0.625

6 0

4 years ago

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Suppose 8 out of every 20 students are absent from school less than five days a year.How many students would be absent from scho

Paladinen [302]

...................333

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3 years ago

What is the difference between polygons and quadrilaterals?

julia-pushkina [17]

A polygon cannot have curved sides. Examples of polygons include a triangle, square, rectangle, or any unnamed shape that is closed in, and has straight sides. ... A quadrilateral is a special kind of polygon that has exactly four sides that are all line segments.

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3 years ago