OpenStudy (momwasright):

Need help with a math question

2 years ago
OpenStudy (dopeness_):

I can try. :)

2 years ago
OpenStudy (volleyballlover55):

2 years ago
OpenStudy (momwasright):

Draw a rhombus. Label its vertices ABCD(I've done this). Angle A measures 160 degrees. Angle D measures x(x-1). Explain how to find the value of x.

2 years ago
OpenStudy (momwasright):

any of you understand this?

2 years ago
Mehek (mehek14):

|dw:1461273149849:dw| first distribute x(x-1)

2 years ago
OpenStudy (momwasright):

okay, Ive drawn the rhombus and it looked just like that, but then I can t figure out how to distribute it

2 years ago
Mehek (mehek14):

x(x-1) = x * x = ? x * -1 = ?

2 years ago
OpenStudy (momwasright):

x(x-1) = x^2 - x x * x = x^2 x*-1 = -x

2 years ago

Correct

2 years ago
OpenStudy (momwasright):

is that it?

2 years ago
Mehek (mehek14):

$$x^2-x+160=180$$

2 years ago
Mehek (mehek14):

$$x^2-x-20 = 0$$

2 years ago
OpenStudy (momwasright):

2√5 ?

2 years ago
OpenStudy (momwasright):

2√5x?

2 years ago
OpenStudy (momwasright):

no, that isnt it nevermind.

2 years ago
Mehek (mehek14):

How did you get that?

2 years ago
Mehek (mehek14):

It should be like $$(x-?)(x+?)$$

2 years ago

He solved for it from here x^2−x+160=180

2 years ago
OpenStudy (momwasright):

(x -5)(x +4) ?

2 years ago

Yes

2 years ago
Mehek (mehek14):

correct

2 years ago
OpenStudy (momwasright):

I dont understand where I go from here. This problem is really confusing to me.

2 years ago
Mehek (mehek14):

I think it should be like (x-5)(x+4) x - 5 = 0 x + 4 = 0 and then you solve for x for both.

2 years ago

Or do something called x opp, and just change the signs. Positive -> Negative Negative -> Positive

2 years ago
OpenStudy (momwasright):

(x = 5) (x = -4)?

2 years ago
Mehek (mehek14):

Right

2 years ago
Mehek (mehek14):

You don't need parenthesis just x = 5 x = -4

2 years ago
OpenStudy (momwasright):

okay

2 years ago
OpenStudy (momwasright):

so it would look like this? x(x-1) 5({-4} -1) = ...?

2 years ago
OpenStudy (momwasright):

or would it be 2 separate problems? like, -4(-4 - 1) and 5(5-1)

2 years ago
OpenStudy (momwasright):

x = 20 on both problems.. I feel dumb lol

2 years ago
OpenStudy (momwasright):

2 years ago
Mehek (mehek14):

You're welcome :)

2 years ago

I morally supported you guys 100% of the way

2 years ago
OpenStudy (momwasright):

Haha! Everytime I saw that cat on your profile picture, I got +25 Motivation :P

2 years ago