A B grade is 80%, to find the average you add all the numbers and divide by the amount of subjects. In this case it would be 79+79+78 divided by 3.
a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.
by definition, an arc subtended by a central angle of some given measure has the same measure. so .
for you to earn a b in...