Question

Find m 9 years ago

Answer 1

BD bisects ABC

Answer 2

Since BD bisects the angle, both half are equal angles...

4x^2 - 10 = 7x + 5

Answer 3

if you put that into the standard form... ax^2 + bx + c = 0 , you can use the quadratic formula to solve for the value(s) of x.

4x^2 - 7x - 15 = 0

Answer 4

sorry i posed the wrong question how do i solve for ABC with an x^2 and x

Answer 5

once you figure out x... then you know both those angle measures... 7x + 5 and 4x^2 - 10

Answer 6

ok i get it forgot about the quadratic formula

Answer 7

yeh, if you solve ax^2 + bx + c = 0 for x=.. then you get
\[x = \frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]

Answer 8

so will there be two answers?

Answer 9

@DanJS i'm stuck again sorry how would I solve for x using the quadratic equations since there are two answers?

Answer 10

right, what answers did you get

Answer 11

3 and -1.25

Answer 12

yeah you got it, in this case, a negative angle measure would not make sense, the -1.25 gives 7x + 5 = 7*-1.25 + 5

negative angles.

Answer 13

that's what I thought but wasn't sure thanks a lot
@DanJS

Answer 14

welcome