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san4es73 [151]
2 years ago
15

HELP ASAP ! WORK A LOT POINTS!

Mathematics
1 answer:
Svetlanka [38]2 years ago
6 0

Answer:

y=2x-8

Step-by-step explanation:

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PLEASE HELP WITH THIS AND ANSWER OT CORRECTLY WITH AN EXPLANATION PLEASE TYSM!
zaharov [31]

Answer:

I think the answer is 64 sqr foot try that and let me now

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2 years ago
For the region bounded by y=2x​, the​ x-axis, and x=1​, determine which of the following is​ greater: the volume of the solid ge
telo118 [61]

Answer:

The correct answer B) The volumes are equal.

Step-by-step explanation:

The area of a disk of revolution at any x about the x- axis is πy² where y=2x. If we integrate this area on the given range of values of x from x=0 to x=1 , we will get the volume of revolution about the x-axis, which here equals,

\int\limits^1_0 {(pi)y^{2} } \, dx

which when evaluated gives 4pi/3.

Now we have to calculate the volume of revolution about the y-axis. For that we have to first see by drawing the diagram that the area of the CD like disk centered about the y-axis for any y, as we rotate the triangular area given in the question would be pi - pi*x². if we integrate this area over the range of value of y that is from y=0 to y=2 , we will obtain the volume of revolution about the y-axis, which is given by,

\int\limits^2_0 {pi - pix^{2} } \, dy = \int\limits^2_0 {1 - y^{2}/4 } \, dy

If we just evaluate the integral as usual we will get 4pi/3 again(In the second step i have just replaced x with y/2 as given by the equation of the line), which is the same answer we got for the volume of revolution about the x-axis. Which means that the answer B) is correct.

7 0
2 years ago
Find the 8th term of the geometric sequence 7, 28, 112, ...
Bumek [7]
I got 114688 by going up x4
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3 years ago
A cone has a height of 15 yards and a diameter of 10 uarsd what size the volume use pi and round to the nearest hundredth
dsp73
Volume is 392.7 yards cubed

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3 years ago
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Mr. Martin bought a microwave that was originally priced $225. He received a 30% discount. What is the sale price of the microwa
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I have a simple but slightly time consuming way of doing this. Find 30% of 100 double it and then find 30% of 25, add the two together... In this case 60 + 7.5. After you do that subtract that number from 225. So subtract 67.5 from 225 and there is your answer. Your answer is 157.5
5 0
2 years ago
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