evaluate the expression
7d-5cif d=7 and c=3
a)50
b)40
c)20
d)34
substitute the numbers given...
7(7)-5(3)
49-15
34
7*7= 49
5*3= 15
49-15=
34
To evaluate the expression 7d-5cif, where d=7 and c=3, you need to substitute the given values of d and c into the expression and perform the arithmetic operations.
Substituting d=7 and c=3, we have:
7d - 5cif
= 7(7) - 5(3)i
= 49 - 15i
Thus, the evaluated expression is 49 - 15i.
However, the answer options you provided are numerical values, rather than complex numbers (numbers with both real and imaginary components). Therefore, it seems there might be an error in the expression or the answer options. Please double-check the expression or the provided choices to ensure the correctness of the question.