2 years ago

Which of the following expressions is equivalent to 50-30y?

Mathematics

1 answer:

Vitek1552 [10]2 years ago

4 0

Answer:

I need the other expressions :l

Step-by-step explanation:

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What times what equals -30 but also can be added together and equal -4

Step2247 [10]

Answer:

Step-by-step explanation:

xy=-30

y=-30/x

x+y=-4

x-30/x=-4

x²-30=-4x

x²+4x-30=0

$x^2+4x-30=0\\x=\frac{-4\pm\sqrt{16+120} }{2} \\=\frac{-4\pm\sqrt{136} }{2} \\=-2\pm\sqrt{39} \\=-2+\sqrt{39} ,-2-\sqrt{39} \\y=\frac{-4}{-2+\sqrt{39} } ,\frac{4}{2+\sqrt{39} }$ $correction write ~-30 ~in~place~of~-4~in~the~end$

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Step-by-step explanation:

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Which of the following expressions is equivalent to 50-30y​?

Which of the following expressions is equivalent to 50-30y?