Find the value of x.

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30

Step-by-step explanation:

since the 2 sides are congruent, the two angles are congruent, so

75+75+ x= 180

150+x=180

x=30

30

Step-by-step explanation:

Remark

The angle that looks like a shark's fin sticking out of the water is also 75o.  So you have 2 angles that are 75 degrees each. Add them together.

Solution

x + 75 + 75 = 180            All triangles have 180 degrees.

x + 150 = 180                  Subtract 150 from both sides.

x= 180 - 150

x = 30

yes

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step-by-step explanation:

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.