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Dimas [21]
3 years ago
8

Don't know this please help

Mathematics
1 answer:
nikitadnepr [17]3 years ago
6 0
I would say answer number 2
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the perimeter of a rectangular poster is 156inches its width is 36 inches and find the length and area
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The length equals 42 inches because you take 36+36 because there are two widths and that equals 72. Then take 156-72 which equals 84. Take 84 divided by two because there are two lengths and you get 42 inches!
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Given the trinomial 2x*2 + 4x − 2, what is the value of the discriminant? a. 0 b. 10 c. 32 d. 36
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2x^{2}+4x-2 \\  \\ \Delta=b^{2}-4ac \\  \\ \Delta=4^{2}-4*2*(-2)=16+16=32

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