Since a triangle's angles must all together measure 180 degrees, subtract the two angles from 180: 180 - 71 - 63 = 46
Answer:
Point H is not in the interior of sphere T.
Answer: His class has approximately 150 textbooks in total
Explanation: Because it is given that each student carries about 5 textbooks, with 30 students in the class, the equation would be 5 • 30 = 150. Some students may have more, while others may have less, so the average is given as 5 in order to simplify the equation.
If you would like to calculate (3 * x + 2)^2 - (2 * x - 1)^2, you can do this using the following steps:
(3 * x + 2)^2 - (2 * x - 1)^2 =
9 * x^2 + 12 * x + 4 - (4 * x^2 - 4 * x + 1) =
9 * x^2 + 12 * x + 4 - 4 * x^2 + 4 * x - 1 =
5 * x^2 + 16 * x + 3
The result is 5 * x^2 + 16 * x + 3.
