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Mila [183]
3 years ago
6

2x3x4x5x6x7x9x10x20x31x41x42

Mathematics
2 answers:
dalvyx [7]3 years ago
8 0

Step-by-step explanation:

2 \times 3 \times 4 \times 5 \times 6 \times 7 \times 9 \times 10 \times 20 \times 31 \times 41 \times 42 \\ 6 \times 20 \times 42 \times 90 \times 620 \times 1722 \\ 120 \times 3780 \times 1,067,640 \\ 453,600 \times 1067640 \\  = 4.84281504 \times  {10}^{11}

agasfer [191]3 years ago
3 0
The answer is 4.84281504e11
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Bryce ran a race that was 2.5 miles long. How long was the race, in feet? Round your answer to the nearest hundred. A. 2,100 ft
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4 0
2 years ago
Solving for matrices
muminat

Answer:

D

Step-by-step explanation:

The augmented matrix for the system of three equaitons is

\left(\begin{array}{ccccc} 3&-4&-5&|&-27\\5&2&-2&|&11\\5&-4&4&|&-7\end{array}\right)

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\left(\begin{array}{ccccc} 3&-4&-5&|&-27\\0&-26&-19&|&-168\\5&-4&4&|&-7\end{array}\right)

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\left(\begin{array}{ccccc} 3&-4&-5&|&-27\\0&-26&-19&|&-168\\0&6&-6&|&18\end{array}\right)

Divide the third row by 6:

\left(\begin{array}{ccccc} 3&-4&-5&|&-27\\0&-26&-19&|&-168\\0&1&-1&|&3\end{array}\right)

Now multiply  the third equation by 26 and add it to the second row:

\left(\begin{array}{ccccc} 3&-4&-5&|&-27\\0&-26&-19&|&-168\\0&0&-45&|&-90\end{array}\right)

You get the system of three equations:

\left\{\begin{array}{r}3x-4y-5z=-27\\-26y-19z=-168\\-45z=-90\end{array}\right.

From the third equation

z=\dfrac{90}{45}=2.

Substitute z=2 into the second equation:

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Now substitute z=2 and y=5 into the first equation:

3x-4\cdot 5-5\cdot 2=-27\\ \\3x-20-10=-27\\ \\3x-30=-27\\ \\3x=-27+30=3\\ \\x=1.

The solution is (1,5,2)

4 0
3 years ago
The first term of an arithmetic sequence is -5, and the tenth term is 13. Find the common difference.
zzz [600]
Hello,

u_{1} =-5\\
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==\ \textgreater \  9d=18 \\
==\ \textgreater \  d=2


6 0
3 years ago
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