Which values for A and B will create infinitely many solutions for this system of equations?

Ax-y=8

2x+y=B

A = 2.B - 8

A=-2.B=8

A = 2.B=-8

A--2.8--8

What is the difference between regular convex and concave polygons

The frequency table shows the results of a survey comparing the number of beach towels sold for full price and at a discount during each of the three summer months. the store owner converts the frequency table to a conditional relative frequency table by row. which value should he use for x? round to the nearest hundredth. 0.89 0.90 0.92 0.96

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?