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Aloiza [94]
3 years ago
12

Find x in this right triangle

Mathematics
1 answer:
Anna11 [10]3 years ago
8 0

<u>Since the </u><u>triangle</u><u> is right angled, we may use pythagoras theorem to find the third side.</u>

<u>Pythagoras theorem :-</u>

KI^2 + JI^2 = KJ^2

<u>substituting the known values in the formula,</u>

x^2 + 3^2 = 5^2

x^2 + 9 = 25

x^2 = 25 - 9

x^2 = 16

x = √16

x = 4

______________________

•°• value of x is 4cm

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3 years ago
Factor this expression completely. 9x (squared) -16​
notsponge [240]
Soln,

here

9 {x}^{2} - 16

= ( {3x)}^{2} - {4}^{2}

= (3x + 4)(3x - 4)
I hope this was helpful.
3 0
3 years ago
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