At 9 am Sunday morning it was 6 degrees Fahrenheit. The temperature decreased by 5 degrees. Then the temperature increased by 3 degrees. Then the temperature decreased by 8 degrees. What is the ending temperature?

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.