Simplified version would be 2/5
2x^2-5xy-y^3 if x=-3, and y=-2
2(-3)^2- 5(-3)(-2) -(-2)^3
=2(9) - 5(6) - (-8)
= 18 - 30 + 8
= -4
Divide 25.7 by 141.

Now, multiply that with 100 percent to get the percentage.

18.22% is your answer! If the question wants you to round it to the nearest percent, the answer will be 18%.
Answer:
130
Step-by-step explanation:
Times 40 & 3 to get 120.
Then as 1 is equal to 1/4 and 4 is equal to 4/4 which is a whole.
As 4 = 4/4 or 1 whole.
Count by 4 with your fingers until you get 40. Which is ten.
Then add 120+10 which equals to our answer that is 130.