NEED THE ANSWER ASAP PLEASE
2 answers:
Answer:
AB = 5
Step-by-step explanation:
Because it is an isosceles triangle, we can say that AB equals BC, so we can form an equation.
AB = BC
3x - 4 = 5x - 10
→ Minus 5x from both sides to get the 'x' on one side
-2x - 4 = -10
→ Add -4 to both sides to isolate -2x
-2x = -6
→ Divide both sides by -2 to isolate x
x = 3
Now we know that x = 3, we can put it in to the length of AB
3 × 3 - 4 = 9 - 4 = 5
Answer:
AB = 5
Step-by-step explanation:
Since the triangle is isosceles then the legs are congruent, that is
BC = BA, substitute values
5x - 10 = 3x - 4 ( subtract 3x from both sides )
2x - 10 = - 4 ( add 10 to both sides )
2x = 6 ( divide both sides by 2 )
x = 3
Thus
AB = 3x - 4 = 3(3) - 4 = 9 - 4 = 5
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