Joshua’s math textbook weighs 4.21 ounces. his social studies book weighs 3.99 ounces. what is the difference in weight between the two books?

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.

How to use order of operation in 20 divide by 4 multiply 5 = 1

Which expressions are equivalent to -7+3(-4e-3)? choose all answers that apply: choose all answers that apply: a -4(3e+4)? 4(3e+4) b 12e12e c none of the above