Using the standard normal distribution tables, what is the area under the standard normal curve corresponding to -0.5

How are sas and sss used to show that two triangles are congruent?

At store a, erasers are sold individually. the cost y of x erasers is represented by the equation y=0.75x. the costs of erasers at store b are shown in the graph.

Robert is placing sod in two square shaped areas of his backyard. one side of the first area is 7.5 feet. one side of the other area is 5.7 feet. the sod costs y dollars per square foot