CAN SOMEONE PLEASE HELP ME

Which equation and solution can be used to solve this problem? thirteen less than a number is sixteen. 13-n=16: add 13 to both sides. the answer is 29. n+13=16: subtract 13 from both sides. the answer is 3. n+16=13 subtract 13 from both sides. the answer is 3. n-13=16: add 13 to both sides. the answer is 29.

How many different triangles can be constructed with the angle measurements of 134° 10° and 36° ?

Find the arc length of the semicircle. 7the grade