PLZZZ HELLP 3+7 − 1/2 is an example of A. a numerical equation
B. an algebraic equation
C. a numerical expression
D. an algebraic expression

C. a numerical expression.

Step-by-step explanation:

Right away, what you should know is that this is an expression. Equations are expressions, except wiht an equal sign. This is not algabraeic though, since there is no valuable (for example 3x, or 7a). So, through the process of elimination, the answer would be a numerical expression.

Hope this helps!

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i

answer: h

step-by-step explanation: