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skelet666 [1.2K]
4 years ago
11

What is the x-intercept for the equation –2x + 5y = –10?

Mathematics
1 answer:
storchak [24]4 years ago
8 0
Hello : 
<span>the x-intercept for the equation –2x + 5y = –10 when : y = 0
-2x+5(0) = -10
-2x = -10
x = 5 
the point is : (5 , 0 )</span>
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Answer: 6630

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Number of combinations of r things taken out of things = ^nC_r=\dfrac{n!}{r!(n-r)!}

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=^{17}C_1\times^{20}C_{2}+^{17}C_2\times^{20}C_{1}+^{17}C_3\times^{20}C_{0}

=(17)\times\dfrac{20!}{2!18!}+\dfrac{17!}{2!15!}\times(20)+\dfrac{17!}{3!14!}(1)\\\\=3230+2720+680=6630

Hence, the  number of different combinations of 3 movies can she rent if she wants at least one documentary is 6630 .

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If you meant to write \sqrt[3]{256} (the cube root of 256), then we could go on to have

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