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3 years ago

1.What is value of x?

Mathematics

1 answer:

Vesnalui [34]3 years ago

5 0

For the first picture..........

|AB| |BD|
-----=-----
|AC| |DC|

x+8 10
-----=----
2x-5 14

10(2x-5)=14(x+8)

20x-50 = 14x+112

20x-14x = 112+50

6x = 162

x= 162/6

x=27.....

For the second picture.......

AD| |AC|
-----=-----
|DB| |CB|

3 4
--=---
x 7.5

4×X = 3×7.5

x = 22.5/4

x = 5.625....

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Step-by-step explanation:

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3 years ago

Factor the trinomial below.

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Step-by-step explanation:

Hope this helps have a great day:)

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Y * x = 20<br><br> y + x = 9 <br><br> what numbers are y and x equal to?

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$y = 9 - x$
Substitute into
$y \times x = 20 \\ (9 - x) \times x = 20 \\ { - x}^{2} + 9x = 20 \\ {x}^{2} - 9x + 20 = 0 \\ (x - 5)(x -4) = 0 \\ x = 5 \: or \: x = 4$
When x = 5,
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x = 5, y = 4
x = 4, y = 5

Hope this helps. - M

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