Find an equation of the circle whose diameter has endpoints (-2,-5) and (6,-1)

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?