About 400 marbles. You simply set up a proportion and solve it as I did in the photo attached.
I think it’s d please give me brainliest
Yes and opposite and an absolute value of an integer will be the same.
Answer:
-1.5m + 4n is the equivalent expression
Step-by-step explanation:
To find the equivalent expression, we combine the like terms.
We are given the following expression:
m + 4n - 2.5m
Combining the like terms:
m - 2.5m + 4n
-1.5m + 4n is the equivalent expression
There are two real roots (5 and -5) and 4 imaginary roots