(-5) + (-2) =

Please help I’m in a exam

What is the value of x in the diagram below?

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8