So.. I'm sure everyone's heard that a million times. But.. yeah, I'm really at a loss. Perhaps the numbers are wrong?
Find the value of x.
Alright, here was my attempt. It's known that when two transversals intersect parallel lines, they do so proportionately.
3x /4x = 3x-7/5x + 8
Cross multiply.
15x2 + 24x = 12x2 - 28x
(I look at that and start thinking "Oh god.. quadratic thingy. That was from like two years ago?")
3x2 + 52x + 0 = 0 (Well, technically yeah. I just don't if I'm allowed to do that? Anyway. Plug it into the formula.)
-52 +- SQRT 522 - 4(3)(0) / 2(3)
-52 +- 52 /6
Solutions are 0 and -17.333...
But if you plug those back in to the original picture, it doesn't work. And I can't figure out what to do. >_>
Okay, this one isn't really the math being wrong, more of me not knowing wtf to do. To be honest, I think a number's missing, 'cos I'm not convinced it's possible... Find the values of x and y.
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Izzy
So.. I'm sure everyone's heard that a million times. But.. yeah, I'm really at a loss. Perhaps the numbers are wrong?
Find the value of x.
Alright, here was my attempt. It's known that when two transversals intersect parallel lines, they do so proportionately.
3x /4x = 3x-7/5x + 8
Cross multiply.
15x2 + 24x = 12x2 - 28x
(I look at that and start thinking "Oh god.. quadratic thingy. That was from like two years ago?")
3x2 + 52x + 0 = 0 (Well, technically yeah. I just don't if I'm allowed to do that? Anyway. Plug it into the formula.)
-52 +- SQRT 522 - 4(3)(0) / 2(3)
-52 +- 52 /6
Solutions are 0 and -17.333...
But if you plug those back in to the original picture, it doesn't work. And I can't figure out what to do. >_>
Okay, this one isn't really the math being wrong, more of me not knowing wtf to do. To be honest, I think a number's missing, 'cos I'm not convinced it's possible... Find the values of x and y.
x = 10, no problem there. But I'm lost on y.
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