When 27 times x^2 times z all over negative 3 times x^2 z to the fourth power is completely simplified, the exponent on the variable z is

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

In δabc, if the length of side b is 3 centimeters and the measures of ∠b and ∠c are 45° and 60°, respectively, what is the length of side c to two decimal places?

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum