Which of the following is a characteristic of spherical geometry? O A. The boundaries of an arc are considered to be at infinity.
B. The sum of angle measures in a triangle is more than 180°.
C. The sum of angle measures in a triangle is less than 180°.
D. Lines are called Koch curves.

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a