2 answers:
ANSWER
x=9
y=5
EXPLANATION
The y triangle is an equilateral triangle.
Each measure of an equilateral triangle is 60°
This implies that:
(7x-3)°=60°
Add 3 to both sides
7x=60+3
7x =63
Divide both sides by 7
Also,
11y+5=60°
Subtract 5: from both sides of the equation
11y=60-5
11y=55
Divide both sides by 11
y=5
Answer:
x = 9
Step-by-step explanation:
All 3 sides of the triangle are congruent making it an equilateral triangle with all 3 angles being congruent.
Each angle is therefore 180° ÷ 3 = 60°
Hence
7x - 3 = 60 ( add 3 to both sides )
7x = 63 ( divide both sides by 7 )
x = 9
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