120 g of seawater. If you need the work I can send a picture
Answer:
First answer choice
Step-by-step explanation:
The answer is C because it's two negatives. Hope that helped
Let’s say the unknown number is x.
therefore,
(2x)^2/3 - 30= 18
4x^2/3 -30 = 18
4x^2-90/ 3 = 18
multiply 18 by 3, and 4x^2-90 by 1
hence,
4x^2-90 = 54
4x^2=144
x^2= 144/4
x^2= 36
x=+ or - 6
hope it helps:)
