Answer:
x=-5
y=-4
Step-by-step explanation:
lest re write the equations as
4y-5x=9
-4y+x=11
adding both equations
4y-5x-4y+x=9+11
-4x=20
x=20/-4
x=-5
putting x in second equation
-5-4y=11
-4y=11+5
-4y=16
y=16/-4
y=-4
Answer:
The answer is 120 cubic feet of water
Step-by-step explanation:
Step 1: Calculate the area of the pool;
(l)(w)(h)= 5(4)(2). That equals 20 times 2 which is 40
Step 2: Multiply the area by 3
This is because It was filled three times
40*3 = 120
Answer:
(2) 6x^2+40x +50
Step-by-step explanation:
(4x+10)*(2x+5) = 8x^2 +40+50
minus 2x^2
=6x^2 +40 +50
Answer: 3hours
Explanation: it would take 3hours because 45 divided by 3 is 15, and also 15 x 3 is 45.
Hope that helps, have a good day :)