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sasho [114]
3 years ago
5

Complete the rational operation

D%7B5%7D%20" id="TexFormula1" title=" \frac{3}{x - 5} - \frac{x}{5} " alt=" \frac{3}{x - 5} - \frac{x}{5} " align="absmiddle" class="latex-formula">
Mathematics
1 answer:
prisoha [69]3 years ago
6 0
We have
                             3 / (x-5) - x/5
We make the GCF and we have
                                    15/[ 5(x-5) ] - x(x-5)/[ 5(x-5)]
                                  = [ 15 - x(x-5) ]  [5(x-5)]
                                  = [ 15 - x^2 + 5x] / [ 5 (x-5) ]
                                  = [15 - x^2 + 5x]/[5x - 25]
An answer to your question is (15-x^2+5x)/(5x-25)
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3 years ago
-4x+y=23 and 4x-9y=-15
astra-53 [7]

Answer:  x= -6; y= -1

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4x - 9(23 + 4x) = - 15

4x - 207 - 36x = - 15

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5 0
3 years ago
Figure CDEF is a parallelogram.
Salsk061 [2.6K]
We see that CF and DE are parallel to each other, which means that they had the same length with each other, so:
6n-1=5n+9
Subtract 5n for both side
6n-1-5n=5n+9-5n
n-1=9
Add 1 for both side
n-1+1=9+1
n=10
CF=
6n-1
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DE=
5n+9
=5(10)+9
=50+9
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CD/FE:
4n+2
=4(10)+2
=42
True/False:
n=10 True
n=7 False
CF=59 True
FE=42 True
CD=30 False. As a result, n=10;CF=59; and FE=42 is your final answer. Hope it help!
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