This is from an SAT subject test (Math 1) online prep. I can't figure it out for the life of me! Please don't just tell me the answer, but also how you're supposed to figure it out!
http://i223.photobucket.com/albums/dd205/OkayThanksToYou/maththing.jpg
Thanks so much!! I'll pick a best answer TONIGHT!
2007-08-18 07:51:38 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Because AB and CD are parallel, angle CDB = angle B = y°. Since x is an exterior angle to the upper right triangle that contains z, x = y+z.
2007-08-18 08:06:06 · answer #1 · answered by Philo 7 · 0⤊ 0⤋
Squaring the two facets of the equation: ?(2x + 9) = ?(x + a million) + 2 (2x + 9) = (x + a million) + 2×2×?(x + a million) + 4 2x + 9 - x - a million - 4 = 4?(x + a million) x + 4 = 4?(x + a million) Squaring as quickly as greater: x² + 8x + sixteen = sixteen(x + a million) x² + 8x + sixteen - 16x - sixteen = 0 x² - 8x = 0 x(x - 8) = 0 solutions: x = 0 or x = 8
2016-11-12 20:30:38 · answer #2 · answered by bhupender 4 · 0⤊ 0⤋
Let the lines AC & BD intersect at O,
so angle x+angle COD=180 degree
also angle z+ angle CDO+angle COD=180 degree
so angle z+angle CDO= angle x
But angle CDO= angle y as ABIICD
so x=y+z ans
2007-08-18 08:31:08 · answer #3 · answered by MAHAANIM07 4 · 0⤊ 0⤋
x = y + z
because the 2 sides are parallel so
angle BAC = z and angle ABD = y
and y + z = angle x
2007-08-18 08:07:56 · answer #4 · answered by vlee1225 6 · 0⤊ 0⤋
x = z + y
2007-08-18 08:07:13 · answer #5 · answered by harry m 6 · 0⤊ 0⤋