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3 years ago

Pls help me with this :) .

Mathematics

1 answer:

san4es73 [151]3 years ago

3 0

Answer:

35 is the answer thank u 35 is a real answer

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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

Solve the given problem.

fiasKO [112]

This is a word problem so translate to math so this is asking 6+(4/2) which is 8

5 0

3 years ago

Read 2 more answers

HELPS PLS 44 and 17 what is y and x

olga_2 [115]

Y is 11.82
i put my working below

3 0

2 years ago

Calculate the slope of a line that passes through the points (9, 3) and (19,-17).

Zigmanuir [339]

Answer:

-2.6 is the slope.

<h3><u>Step-by-step explanation:</u></h3>

Slope = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$
=> $\frac{-17-9}{19 - 9}$
=> -26/10
=> -2.6

<h3><u>Conclusion:</u></h3>

Therefore, <u>-2.6 is the slope.</u>

Hoped this helped.

$BrainiacUser1357$

5 0

2 years ago

Is it A?

faltersainse [42]

This is true, it's A!

Students grades are most likely coorelated with some event that influenced them directly, or that is influenced by the same factor. Here having completed the exam revieq packet means that the students have studied, so they will likely get good grades.

6 0

3 years ago