Simplify. 12c + 3 (c + 10) + 12

Find the quotient. 50a2 – 98b2 -5a +7b

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse