In a class of 38 student,30 are good in mathematics and 22 are good in physics how many students are good in both mathematics and physics ​

Is a positive integer raised to a negative power always positive

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?