It was extremely cold at midnight. During the morning, the temperature rose by 5°C. By midday, it had reached -11°C. What was the temperature at midnight?
Explain what method you used to find the starting temperature.

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w