Correct Answer: Option C

Explanation

Sum of angles in a quadrilateral = 360°

\(\therefore\) (3y + 10) + (2y + 30) + (y + 20) + 4y = 360

10y + 60 = 360 \(\implies\) 10y = 300

y = 30° 

There is an explanation video available below.

• What can i study with 155 score in science course? Answer this

  2 Answers   ·   Biology   ·   3 days ago
• Does WAEC give Calculator to student for there exam? Answer this

  3 Answers   ·   Mathematics   ·   4 days ago
• find the value of (16)^3/2 + log0.0001 + log325? Answer this

  13 Answers   ·   Mathematics   ·   10 years ago