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Kay [80]
3 years ago
11

What is the solution to the inequality l2n+5l > 1

Mathematics
2 answers:
posledela3 years ago
7 0
|2n+5| \ \textgreater \  1\\
2n+5\ \textgreater \ 1 \vee 2n+5\ \textless \ -1\\
2n\ \textgreater \ -4 \vee 2n\ \textless \ -6\\
n\ \textgreater \ -2 \vee n\ \textless \ -3\\
n\in(-\infty,-3)\cup(-2,\infty)
Mamont248 [21]3 years ago
6 0

<span>l2n+5l > 1

</span><span>(2n+5) > 1
    2n > - 4
      n > -2

</span>-(2n+5) > 1
    -2n - 5 > 1
      -2n  > 6
         n < -3

answer
n<-3 or n>-2
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3 years ago
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3 years ago
F(x) = x ^ 2 - 8x + 7
bekas [8.4K]
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They have the same x-value
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Step-by-step explanation:
To find the vertex of a second degree equation, in this case the minimum value, we can use the following equation:
x = -b / 2a
Remember that a second degree equation has the following form:
ax^2 + bx + c
so a = 1, b = -8 and c = 7. Now you have to substitute in the previous equation
x = - (-8) / 2(1)
x = 8 / 2
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This means that the two functions have the same x-value.
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