How many solutions does this equation have? 9z = –8 + 7z -no solution
-one solution
-infinitely many solutions

Can some one me with these questions

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

Two triangles can be formed with the given information. use the law of sines to solve the triangles. b = 49°, a = 16, b = 14