Picture below please help

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

If chord ab is congruent to chord cd, then what must be true about ef and eg?

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