-2n-2=12
add 2 to both sides
-2n=14
divide -2 to both sides
n=-7
Answer: y-3
Step-by-step explanation:
took the test and got it right!
Answer:
add like terms
y=-3+1x-y=6
ok, umm 3 times 2= 6 right? don’t know why there are two = signs try plus -y to positive y and that would give you
y=-3+1x+6
i hate trying to solve these algebraically
hope this got you somewhere
Step-by-step explanation:
Answer:
Step-by-step explanation:
9
Answer:
6.11km/hr
Step-by-step explanation:
Let the speed that Kelli swims be represented by Y
Speed of the river = 5km/hr
Distance = Speed × Time
Kelli swam upstream for some distance in one hour
Swimming upstream takes a negative sign, hence:
1 hour ×( Y - 5) = Distance
Distance = Y - 5
She then swam downstream the same river for the same distance in only 6 minutes
Downstream takes a positive sign
Converting 6 minutes to hour =
60 minutes = 1 hour
6 minutes =
Cross Multiply
6/60 = 1/10 hour
Hence, Distance =
1/10 × (Y + 5)
= Y/10 + 1/2
Equating both equations we have:
Y - 5 = Y/10 + 1/2
Collect like terms
Y - Y/10 = 5 + 1/2
9Y/10 = 5 1/2
9Y/ 10 = 11/2
Cross Multiply
9Y × 2 = 10 × 11
18Y = 110
Y = 110/18
Y = 6.1111111111 km/hr
Therefore, Kelli's can swim as fast as 6.11km/hr still in the water.