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AVprozaik [17]
3 years ago
12

What are the solutions of 2x2 + 3x = -5

Mathematics
2 answers:
Daniel [21]3 years ago
7 0
2x^2 + 3x = -5\\2x^2 + 3x +5=0\\ \Delta=3^2-4\cdot2\cdot5=9-40=-31\\\\\Delta
Dvinal [7]3 years ago
5 0
X=-3 since 4 + 3x = -5 then subtracting 4 on each sides you get that 3x = -9 and so x=-9/3 which is equal to -3.
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Just substitute the values, 
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In short, Your Answer would be -6

Hope this helps!
6 0
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Answer:

D - Type of restaurant - fast food or more expensive.

Step-by-step explanation:

By a lurking variable we mean or refer to any variable that is unknown and not controlled for or out of individual control. When there is one or more lurking variables in any study it could results in accidental bias. According to Soares (1985), lurking variables are intrinsic and they are not actually caused by “accidents” in real sense. Hence he suggests that “lurking-variable bias” is a more suitable name for accidental bias.

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It is also possible I don't patronize restaurants! And yet, I am frequent at groceries store.

In real sense, what I spent at groceries might be nothing compare to what I spend at restaurant and vice versa. Hence, the possible lurking variable is type of restaurant - fast food or more expensive which is unknown and not controlled for.

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Answer:

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