Question

What Is the value of X? Enter your answer in the box.

Answer 1

Its an isosceles triangle. Therefore m∠C = m∠A → m∠C = 73°:

`8y-7=73` add 7 to both sides

`8y=80` divide both sides by 8

`\boxed{y=10}`

We know: The sum of measures of the angles of a triangle is equal 180°.

Therefore we have the equation:

`6x+4+73+73=180`

`6x+150=180` subtract 150 from both sides

`6x=30` divide both sides by 6

`\boxed{x=5}`