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vivado [14]
3 years ago
8

I need help on steps part c and d. I did a and b already.

Mathematics
1 answer:
Sever21 [200]3 years ago
3 0
First plot those point to make a shape, then you divide all of the points by 1.5 and you should find the corners of the new shape (it doesn't always work so I'm sorry if it doesn't)
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The top of a ladder slides down a vertical wall at a rate of 0.375 m/s. At the moment when the bottom of the ladder is 6 m from
s344n2d4d5 [400]
The ladder is moving away from the wall at the bottom, namely dx/dt
at a rate of 0.5 m/s, now... when it's 6m away from the wall, it has been moving for 12seconds already then, at 0.5ms, you need 12s to get 6meters away, thus x = 6

the ladder is moving downwards, namely dy/dt
at a rate of 0.375 m/s, in 12seconds, it has moved then 4.5meters, thus y = 4.5

so hmmm, notice, the ladder is sliding down and away from the wall, but the ladder itself itself elongating or shrinking, so is a constant

let us use the pythagorean theorem for that, notice picture below
thus

\bf r^2=x^2+y^2\\\\
-----------------------------\\\\
2r=2x\frac{dx}{dt}+2y\frac{dy}{dt}\impliedby \textit{taking common factor }2
\\\\\\
r=x\frac{dx}{dt}+y\frac{dy}{dt}\qquad 
\begin{cases}
\frac{dy}{dt}=0.375\\\\
\frac{dx}{dt}=0.5\\\\
x=6\\
y=4.5\\\\
r=ladder
\end{cases}
\\\\\\
\left.\cfrac{}{} r \right|_{x=6}\implies ?

pretty sure is very obvious :)

8 0
3 years ago
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Meredith is 3 times as old as Adam. Six years from now, she will be twice as old as Adam will be then. How old is Adam now
Fantom [35]

Answer:

A=6

Step-by-step explanation:

M=3A

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System of equations:

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A=6

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2 years ago
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Answer:

H=V/pi(r)

Step-by-step explanation:

You divide by pi and r...

V/pi(r)=h

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3 years ago
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Reptile [31]
The correct answer to this question is letter "B. <span>Draw a graph which joins the points (100, 135) and (500, 375) and has a slope = 0.6." The one on the x axis should be the number of minutes and on the other hand, the one on the y axis should be the amount being charged.</span>
4 0
3 years ago
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Three runners in a relay race share the 8-mile distance equally. How many miles does each runner travel?
Serggg [28]

Answer: 2 2/3 miles

Step-by-step explanation:

From the question, we are informed that three runners in a relay race share the 8-mile distance equally.

The number of miles that each runner travel will be the total miles divided by number of runners. This will be:

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2 years ago
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