9, 10, 12, x, 20, 25 the median is 14 whats x

Mathematics

1 answer:

Lady_Fox [76]2 years ago

8 0

X equals 16
12+16=28
28 divided by 2 = 14

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Show work and Factor 4x^2+xy-18y^2

grigory [225]

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$4x^2+xy-18y^2=(4x+9y)\,(x-2y)$

Step-by-step explanation:

Let's examine the following general product of two binomials with variables x and y in different terms:

$(ax+by)\,(cx+dy)= ac\,x^2+adxy+bcxy+bdy^2$

so we want the following to happen:

$a\,c = 4\\ad+bc=1\\bd--18$

Notice as well that $ad+bc =1$ means that those two products must differ in just one unit so, one of them has to be negative, or three of them negative. Given that the product $bd=-18$ , then we can consider the case in which one of this (b or d) is the negative factor. So let's then assume that $a\,\,and \,\,c$ are positive.