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trapecia [35]
4 years ago
5

The Sparkling Pool Company supplies the graph below to each of its new clients. The graph shows the relationship between the amo

unt of water pumped into a pool and the time that has elapsed.
Which of the following statements best describe the rate at which the water is pumped into a pool.
A)The water is pumped at a rate of approximately 15 gallons per hour.
B)The water is pumped at a rate of approximately 500 gallons per hour
C)The water is pumped at a rate of approximately 15 gallons per minute.
D)The water is pumped at a rate of approximately 909 gallons per minute.

Mathematics
1 answer:
Alexandra [31]4 years ago
5 0
C)The water is pumped at a rate of approximately 15 gallons per minute.
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How many solutions do consistent dependent lines have
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3 years ago
Find the center of mass of the wire that lies along the curve r and has density =4(1 sin4tcos4t)
dolphi86 [110]

The mass of the wire is found to be 40π√2 units.

<h3>How to find the mass?</h3>

To calculate the mass of the wire which runs along the curve r ( t ) with the density function δ=5.

The general formula is,

Mass = \int_a^b \delta\left|r^{\prime}(t)\right| d t

To find, we must differentiate this same given curve r ( t ) with respect to t to estimate |r'(t)|.

The given integration limits in this case are a = 0, b = 2π.

Now, as per the question;

The equation of the curve is given as;

r(t) = (4cost)i + (4sint)j + 4tk

Now, differentiate this same given curve r ( t ) with respect to t.

\begin{aligned}\left|r^{\prime}(t)\right| &=\sqrt{(-4 \sin t)^2+(4 \cos t)^2+4^2} \\&=\sqrt{16 \sin ^2 t+16 \cos ^2 t+16} \\&=\sqrt{16\left(\sin t^2+\cos ^2 t\right)+16}\end{aligned}

Further simplifying;

\begin{aligned}&=\sqrt{16(1)+16} \\&=\sqrt{16+16} \\&=\sqrt{32} \\\left|r^{\prime}(t)\right| &=4 \sqrt{2}\end{aligned}

Now, use integration to find the mass of the wire;

       \begin{aligned}&=\int_a^b \delta\left|r^{\prime}(t)\right| d t \\&=\int_0^{2 \pi} 54 \sqrt{2} d t \\&=20 \sqrt{2} \int_0^{2 \pi} d t \\&=20 \sqrt{2}[t]_0^{2 \pi} \\&=20 \sqrt{2}[2 \pi-0] \\&=40 \pi \sqrt{2}\end{aligned}

Therefore, the mass of the wire is estimated as 40π√2 units.

To know more about density function, here

brainly.com/question/27846146

#SPJ4

The complete question is-

Find the mass of the wire that lies along the curve r and has density δ.

r(t) = (4cost)i + (4sint)j + 4tk, 0≤t≤2π; δ=5

5 0
1 year ago
Helppp i’m not sure about this one
Gre4nikov [31]

Answer: l×w divided by 2, then subtract the area from the rectangle.

Step-by-step explanation: 7×12=84/2=42

2×3=6

42-6=36

Hope this helps!

8 0
3 years ago
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