Question

whatis the value of x in the marked figurebelow?

Answer 1

first get the hypotenuse of the smallest triangle..it's sqrt(4^2 + 6^2)
= sqrt(16 + 36)
= sqrt(52)
=2 sqrt 13
that becomes one side of the biggest triangle..

next, get the other leg of the biggest triangle...

it is equal to sqrt [(4+x)^2 - (2 sqrt 13)^2)
= sqrt [16 + 8x + x^2 - 52]
= sqrt [x^2 + 8x - 36]

that is the hypotenuse of the second biggest triangle...

to get x...use pythagorean theorem
c^2 = a^2 + b^2
x^2 + 8x -36 = x^2 + 36
8x = 72
x = 9

sorry...i dunno how to explain it in a very simple way coz the problem is complicated. hope you unerstood my explanation :D

Answer 2

i understand sorta. lol thank you(: what does ^ stand for though?

Answer 3

exponent...for example x^2 means x squared

Answer 4

oh ok thanks!