A triangle has two equal sides a. one of the angles in this triangle measures 100° What is the size of each of the other two angles?

40 degrees.

Step-by-step explanation:

As it has 2 equal sides it is an isosceles triangle and it also has 2 equal angles. The other angle cannot be 100 degrees because that is greater than 180 degrees, so the two equal angles must sum to 180 - 100 = 80 degrees.

Each angle measures 40 degrees.

x= -3

step-by-step explanation:

step 1: simplify brackets

4 - x - 1 = 6

step 2: simpilfy

3 - x = 6

step 3: subtract 3 from both sides

-x = 6 - 3

step 4: simpilfy 6 - 3

-x = 3

step 5: multiply both sides by -1

x = -3

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