Leora had some money in her wallet. she spent $18.62 buying groceries and had 43.55 left. how much money did she have in her wallet before she bought the groceries,?

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Iwill give brainliest. suppose tommy walks from his home at (0, 0) to the mall at (0, 5), and then walks to a movie theater at (6, 5). after leaving the theater tommy walks to the store at (6, 0) before returning home. if each grid square represents one block, how many blocks does he walk?