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Mathematics 9 Online
OpenStudy (anonymous):

Help!

OpenStudy (anonymous):

sure

OpenStudy (anonymous):

Awesome thanks for coming!

OpenStudy (anonymous):

where is the question?

OpenStudy (anonymous):

I'm gonna post it now :)

OpenStudy (anonymous):

kk

OpenStudy (anonymous):

Wendy described four triangles as shown below: Triangle A: All sides have length 9 cm. Triangle B: Two sides have length 10 cm, and the included angle measures 60°. Triangle C: Two angles measure 50°. Triangle D: Base has length 8 cm, and base angles measure 45°. Which triangle is not a unique triangle? Triangle A Triangle B Triangle C Triangle D

OpenStudy (anonymous):

do you know it?

OpenStudy (anonymous):

do you know what a unique triangle is?

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

what is it?

OpenStudy (anonymous):

Unique triangles are triangles that do not have an equivalent

OpenStudy (anonymous):

do you know what an equivalent is?

OpenStudy (anonymous):

An equivalent is something that is equal in amount or value

OpenStudy (anonymous):

so if you know what a unique triangle is, then eliminate the options that are unique triangles and that should give you the answer

OpenStudy (anonymous):

I got A

OpenStudy (anonymous):

triangle c is not unique

OpenStudy (anonymous):

do you know why?

OpenStudy (anonymous):

It's c?

OpenStudy (anonymous):

yes, because the angles have to be 50 degrees, but that doesn't mean the sides of the triangle have to be a certain length

OpenStudy (anonymous):

do you get it now?

OpenStudy (anonymous):

Yea

OpenStudy (anonymous):

Thanks! I have more questions :) Do I post them here?

OpenStudy (anonymous):

Which of the following possibilities will form a triangle? Side = 10 cm, side = 5 cm, side = 6 cm Side = 10 cm, side = 6 cm, side = 3 cm Side = 11 cm, side = 5 cm, side = 6 cm Side = 11 cm, side = 5 cm, side = 5 cm

OpenStudy (anonymous):

do you know what the triangle inequality theorem is?

OpenStudy (anonymous):

if you do, it should help

OpenStudy (anonymous):

two sides added together should be larger than the third side of the triangle

OpenStudy (anonymous):

5+6 is greater than 10 so the first one would work, sorry I had a typo in the last reply

OpenStudy (anonymous):

Ok that's would I was gonna say! :)

OpenStudy (anonymous):

Tim wrote the following statement: "You can only draw one unique isosceles triangle that contains an angle of 70°." Which statement is true? Tim is incorrect, because more than one triangle can be drawn with the given information. Tim is correct, because only one unique triangle can be drawn with the given information. Tim is incorrect, because the triangle described cannot be drawn with the given information. None of the above.

OpenStudy (anonymous):

@heretohelpalways

OpenStudy (anonymous):

I am back

OpenStudy (anonymous):

which one do you think it is

OpenStudy (anonymous):

i know what it is

OpenStudy (anonymous):

Ok I got a for this one

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Yay!

OpenStudy (anonymous):

@heretohelpalways

OpenStudy (anonymous):

OpenStudy (anonymous):

@heretohelpalways

OpenStudy (anonymous):

do you know what supplementary angles are?

OpenStudy (anonymous):

it means you can add them together to get 180

OpenStudy (anonymous):

Ok

OpenStudy (anonymous):

so solve this equation : 8x+60+80=180

OpenStudy (anonymous):

to get 5

OpenStudy (anonymous):

5*8+60+80=180, so 5 is correct

OpenStudy (anonymous):

Oh okay!

OpenStudy (anonymous):

OpenStudy (anonymous):

Of course you get a medal :)

OpenStudy (anonymous):

do you know what is the formula for the area of a circle?

OpenStudy (anonymous):

I think the answer is A

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

907.46

OpenStudy (anonymous):

Ok @heretohelpalways

OpenStudy (anonymous):

OpenStudy (anonymous):

@heretohelpalways

OpenStudy (anonymous):

do you know what it is? @heretohelpalways

OpenStudy (anonymous):

I'm not sure

OpenStudy (anonymous):

@Skielerlucas04

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