For the complex number := a + bi, if a=0, what can you conclude about z? O z is a complex number graphed in the first quadrant.
O z is a real number graphed along the real axis.
O z is a complex number graphed in the fourth quadrant.
O z is an imaginary number graphed along the imaginary axis.

Which of the binomials below is a factor of this trinominal? x^2-13+30

Will mark brainliest if you answer ! the taco shop sold 198 lunches friday. this number is 3 more than 3 times the number they sold monday. let n represent the number of lunches sold monday. which equation shows an equality between two different ways of expressing the number of lunches sold on friday? a. n – 3 = 198 b. 3n – 3 = 198 c. 3n + 3 = 198 d. n + 3 = 198

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).