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2 years ago

5. Simplify the expression 49. (1 point)

Mathematics

2 answers:

AveGali [126]2 years ago

6 0

Answer:

Step-by-step explanation:

the sign means square root

to find the answer find a number multiplied by itself to get 49

padilas [110]2 years ago

4 0

Answer:

Step-by-step explanation:

the square root of 49 is 7 since 7 x 7 = 49

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ANSWER
$x \: > \: 17$

EXPLANATION

The given function is

$f(x) = 2 {x}^{2} - 31x - 51$
Let us split the middle term to get,

$f(x) = 2 {x}^{2} -34x + 3x- 51$

We factor to obtain,

$f(x) = 2x(x - 17) -+3(x - 17)$

$f(x) = (2x -+3)(x -17)$

Let us find the zeros of f(x),

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Either

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We need to find the x-value of the vertex, which is the midpoint of the x-intercepts.

This gives us,

$\frac{- \frac{3}{2} + 17}{2} = 7.75$
Hence the axis of symmetry of the parabola has equation,

$x = 7.75$

Since the given function has minimum turning point, it will decrease and then increase.

The function will be increasing for
$x \: > \: 7.75$

The function will be increasing and positive for
$x \: > \: 17$

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