kballet084
kballet084 kballet084
  • 13-12-2014
  • Mathematics
Answered

The measures of two base angles of an isosceles trapezoid are 7x – 12 and 5x + 6. What is the measure of x?
Select one:
a. 3
b. 5
c. 7
d. 9



Answer :

bayjo98241
bayjo98241 bayjo98241
  • 13-12-2014
Because base angles on an isosceles trapezoid are equal you set up this equation
7x - 12 = 5x + 6
-5x+12    -5x +12
2x        = 18
/2            /2
x = 9
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