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12-05-2017
Mathematics

contestada

what is the value of x to the nearest tenth?
2.8
4.2
4.8
6.9

what is the value of x to the nearest tenth 28 42 48 69 class=

Respuesta :

14-05-2017

a^2 + b^2 = c^2
a = x
b = 14
c = x+10
x^2 + 14^2 = (x + 10)^2
( x^2 + 196 = x^2 + 20x +100 ) - x^2
( 20x +100 = 196 ) -100
( 20x = 96 ) / 20
x = 4.8

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