mjanicem07
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PLEASE HELP I HAVE A TIME LIMIT 17 Points and Brainlest to who answers first
In isosceles triangle ABC below, what is the value of x? Triangle A B C. Angle A is 28 degrees and angles B And C are x.
A. 28 degrees
B. 76 degrees
C. 122 degrees
D.152 degrees

Respuesta :

lelittlebxby
a triangle is 180 degrees. 180-28=152. so if angle b and c are combined, your answer is 152 degrees.
kesme981

Answer:

b.) 76

Step-by-step explanation:

A triangles angles will always add up to a total of 180°.Since both angles B and C are x, they have the same value. So to find their value, add the choices to 28 twice until you get 180:

[tex]28+76+76=180[/tex]

Or, you can make and equation. 180 on one side of the equation. On the other side, put both x's (2x) plus the value of angle A:

[tex]2x+28=180[/tex]

Solve for x:

[tex]2x+28-28=180-28\\2x=152\\\\\frac{2x}{2}=\frac{152}{2}\\ x=76[/tex]

Finito.

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