9x mean 9 multipled with an unkown number and 9x is subtracted from another unknown number 'y' . you can substitute with any letters you want ,but you have to use two different letters.
The answer should be 22 and 1/2 inches. Hope I helped!
Other factors may appear when 'r', 't', and 'e' get certain values.
But the only factors you can count on, that don't depend on the
values of 'r', 't', and 'e' and <em>always</em> work, are <em>(r + t)</em> and <em>'e'</em> .
Answer:
y= -21; m∠MNO=40°.
Step-by-step explanation:
1) m∠MON+m∠MNO=90°;
2) -3y-13°-2y-2°=90°;
5y=-105°; ⇒ <u>y= -21</u>;
3) <u>m∠MNO</u>=-2y-2°=42°-2°=<u>40</u>°.
