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3 years ago

What is the value of x given that figure ADCB

Mathematics

2 answers:

aleksley [76]3 years ago

6 0

Answer:

Step-by-step explanation:

Because the trapezoid is isosceles, the two diagonals are congruent. This can be shown by ASA.

ACD = BDC Properties of parallel lines.

DC = DC A line is equal to itself

DBA = CAB Property of parallel lines.

AC = DB Parts of Congruent triangles are congruent

3x + 15 = 7x - 9 Add 9 to both sides

3x + 15 + 9 = 7x

3x + 24 = 7x Subtract 3x from both sides.

24 = 7x - 3x

24 = 4x Divide by 4

24/4 = 4x/4

x = 6

Eduardwww [97]3 years ago

4 0

Answer: 6

Step-by-step explanation:

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