Question

In△ABC the m∠A=(2x+23)?, m∠B=(3x−10)?,and m∠C=(2x+34)?. Choose the correct statement about the classification of the triangle by the angle measures.

A. The triangle is a right triangle because x = 19 , and there is one right angle in the triangle.
B. The triangle is an obtuse triangle because x = 19 , and there is one angle that is greater than 90
degrees.
C. The triangle is an acute triangle because x = 19 , and all three angles are less than 90 degrees.
D. The triangle is an equiangular triangle because x = 19 , and all the angles are congruent to each
other.

Answer 1

@perl

Answer 2

Over here, you see, you actually have to put in the values given in each option

Answer 3

OK.

Answer 4

can you upload a diagram

Answer 5

It doesn't include one.

Answer 6

Yeah. That should do it? the options have also defined what are the different kinds of triangles. should you face any more problems? :-)

Answer 7

OK, I'll let you know.

Answer 8

You wont need a diagram right @perl . Cause the angles are given. We gotta check with values of x in the options and write the answer accordingly

Answer 9

It's not A

Answer 10

Yes correct :-) Go on..

Answer 11

It's C?

Answer 12

we know that a triangle adds up to 180 degrees

Answer 13

<A + < B + C
=
(2x+23)+ (3x−10)+ (2x+34) = 180

Answer 14

<A + < B + C =
(2x+23)+ (3x+10)+ (2x+34) = 180

Answer 15

Right

Answer 16

we can solve it by algebra

Answer 17

collect like terms

Answer 18

I'll solve it.

Answer 19

I got 113/7 o_o

Answer 20

is it right ?

Answer 21

@perl

Answer 22

did you get x = 19 ?
http://www.wolframalpha.com/input/?i=solve+%282x%2B23%29%2B+%283x%E2%88%9210%29%2B+%282x%2B34%29+%3D+180+

Answer 23

what happens when you plug in x = 19

Answer 24

m∠A=(2x+23), m∠B=(3x−10)?,and m∠C=(2x+34)

Answer 25

m<A=(2x+23)
m<A = 2*19 + 23
m∠B=3*19−10
m∠C=2*19+34

Answer 26

SO IT'S c?