Answer:
Option A
Step-by-step explanation:
–5x – 9y = 28 Equation 1
–4x + 5y = –2 Equation 2
We to eliminate one of the variables. In this case "Y" by using the appropiate number, in this case
–5x – 9y = 28
*{–4x + 5y = –2
We have:
–5x – 9y = 28
We have:
–5x = 28
So, We have:
-61X= 122
Using Equation 2. We have:
-4*(-2)+5Y=-2
8+5Y=-2
5Y=-10
Y=
Finally:
X=-2
Y=-2
Part a:
180 x 30
part b:
underestimate. the rounded value is less than the original number
Answer:
The answer is B
Step-by-step explanation:
Answer:
2,830 L.
Step-by-step explanation:
1 kL = 1000 Litres.
2.83 kL = 2,830 L.
F(x)= 5(-x^3)-3+2
f(x)=5(-x^3)-1