Answer: The equations are
6x - 6y = 9
4x + 4y = 9
Step-by-step explanation:
Let x represent the speed of the row boat in still water.
Let y represent the speed of the current.
Dana can travel 9 miles in her rowboat in 6 hours against the current. This means that the total speed at which she travelled is
(x - y) miles per hour.
Distance = speed × time
Distance travelled against the current is expressed as
9 = 6(x - y)
6x - 6y = 9
With the current, it takes 4 hours to row the same distance. This means that the total speed at which she travelled is
(x + y) miles per hour.
Distance travelled with the current is expressed as
9 = 4(x + y)
4x + 4y = 9
Answer:
<em>Shoyo here!</em>
Step-by-step explanation:
10000000000000000000000000000000
Answer:
-1/2
Step-by-step explanation:
lim x-> π/2 cos x /(2x-π) =
lim (x-π/2)->0 sin (π/2 - x) /2(x-π/2) =
lim (x-π/2)->0 - sin (x - π/2)/2(x-π/2) = -1/2
I don't know what the ordered pairs are here, but anyone that doesn't end with a three. Example, (1,3) is on the graph. so is (27, 3) y, will always be three:)
Answer:
Step-by-step explanation:
Let one no. =x
Therefore,other no. =x-7
According to question,
x+x-7= -23
2x=-23+7
x=-16/2
x=-8