Answer:
Blank 1: 40
Blank 2: 10
Step-by-step explanation:
You can start by representing the speed of the water as x and the speed of the dolphin as y, and writing an equation.
y+x=50
y-x=30
Adding these two equations together, you get:
2y=80
y=40 for the speed of the dolphin in still water. Now, you an use one of the previous equations to find the speed of the current.
40-x=30
x=10
Hope this helps!
Answer:
k + 1
v(s) = -------------
S
Step-by-step explanation:
Solve the equation S=k/v(s)+1/v(s) for v(s).
To do this, combine the two terms on the right side, which is easily possible becuse they have the same denominator: v(s):
k + 1
S = ------------
v(s)
Now interchange S and v(s), obtaining:
k + 1
v(s) = -------------
S
for the above question, we can first convert the fractions to decimals to make it easier to work with
<span>1/10 of sand - 0.1 ton </span>
4/5 minute - 0.8 minute
<span>Q1 - </span>
<span>ratio </span>
0.1:0.8
since the ratio is in decimals we can convert it to whole numbers by multiplying by 10
1:8
Q2. amount of sand added in 0.8 minutes - 0.1 ton
<span> amount of sand added in 1 minute - 0.1/0.8 = 0.125 tons</span>
<span>
</span>
Answer:
-2
Step-by-step explanation:
Using the slope theorem:
