All of the following are equivalent except a) 7 x^2 b) 4 x + 3 x c) (4+3) x d) 7 x

except  A) 7 x^2

Step-by-step explanation:

A) 7 x^2  = 7x^2

B) 4 x + 3 x  = 7x

C) (4+3) x  = 7x

D) 7 x = 7x

Hi There!

A) 7x²

Step-by-step explanation:

A) = 7x²

B) = 7x

C) = 7x

D) = 7x

You see that all of them are equivalent except 7x² because its square while the rest aren't.

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

i think 5 miles per hour

step-by-step explanation: