Answer:
(-4,4)
Step-by-step explanation:
-5x-10y=-20
10x+10y=0
divide both sides by 2
-5x-10y=-20
5x+5y=0
that makes
-5y=-20
divide both sides by -5
y=4
now substitute 4 for y
10x+10 x 4=0
multiply
10x+40=0
subtract
10x=-40
divide
x=-4
Answer:
20 gallons
Step-by-step explanation:
you would have to divide 4 and 8 which equals 2
then you multiply 2 by 10
which equals 20
Figure out the number of days she is trying to collect and then divide by the numbers in a week (7)
The Answer Is 57.92 But the easiest way to do it is Rounding it
avg. service time = 2hrs +/- 32 mins = 180 mins +/- 32 mins = 148 mins or 212 mins.
Random sample = 64/400 = 16 % of the total population.
Seriously I dont know the answer to the problem, but it is an interesting question, and it forces me to study probability more.