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3 years ago

What is the solution to the system of equations below? 3x-2y=7 and -3x+5y=5

Mathematics

1 answer:

Zolol [24]3 years ago

8 0

Step-by-step explanation:

So you add one over the other

3x-2y=7

-3x+5y=5

3y=12

Then you divide 3 from both sides

(3y)/3=12/3

y=4

Then you substitute the y=4 in to the equation of your choice

3x-2(4)=7

3x-8=7

+8 +8

3x=15

x=5

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6/1 times 8/3 (reduced)

Evgen [1.6K]

Answer:

Step-by-step explanation:

To do this, you would need to multiply 6/1 to make it 18/3 before multiplying 18/3 with 8/3 to get 144/3, which, reduced, is 48. Hope this helped.

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3 years ago

Use long division to find the solution.

Kruka [31]

90 r 5 is the answer

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3 years ago

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4/5+6/25x8/9+(-8/7) PLEASE ANYONE HELP.ME FAAST.

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Step-by-step explanation:

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2 years ago

2x = 50 4x + 3x = 1/6 + 45 = 1.60 * 45.47 =

posledela

Answer:

1. x = 25

2. Simplified is 7x

3. $\frac{271}{6} , 45.166666, 45\frac{1}{6}$

4. 72.752

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3 years ago

Use Wolframalpha to find the exact volume of the solid obtained by rotating about x = [pi]/2 the region bounded by y = sin^2x, y

Alex777 [14]

Answer:

Step-by-step explanation:

Here the region between two curves is rotated about a vertical line.

The functions are

$y = sin^2x, \\y = sin^4x, \\x in [0,[pi]/2].$

Intersecting points are x=0 and x =pi/2

Since rotated about x = pi/2 we get

using cylindrical shell method

Volume = $2\pi rh\\=2\pi \int\limits^\frac{\pi}{2} _0 {xy} \, dx \\=2\pi \int\limits^\frac{\pi}{2} _0 (x+\frac{\pi}{2} )(sin^2 x -sin^4 x) dx\\$

From wolfram alpha we find that

Volume= $2\pi (\frac{3\pi^2 }{64)} =\frac{6\pi^3}{64}$

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3 years ago