Answer:

Step-by-step explanation:
<u>Formula</u> for calculating speed:

Therefore:

<u>Given values</u>:
- x = the current (in mph)
- Speed = 10 mph
- Distance = 21 miles
- Total time = 5 hours
If the boat is traveling downstream, the current (x mph) will be pushing the boat <u>faster</u>, and so the boat's speed will increase by x mph.
Therefore, the expression for the time it takes for the boat to travel downstream is:

If the boat is traveling upstream, the current (x mph) will be pushing <u>against</u> the boat and so the boat's speed will decrease by x mph.
Therefore, the expression for the time it takes for the boat to travel upstream is:

Therefore, if the total time it takes to travel downstream <em>and</em> upstream is 5 hours:

<u />
<u>To solve for x</u>:









Therefore, the rate of the current is 4 mph.
Answer:
multiply all your numbers once you get your answer it will come together
Part A:
14/40=x/840
14*840=40x
11760=40x
294=x
x=294
194 are expected to eat the tomato soup
Part B:
find the average of 10,11, and 14
35/3=11.67
11.67/40=x/840
40x=11.67*840
9802.8=40x
x=245.07
245.07/840
0.29175*100 = 29.175
29.175%
Answer:
-27 + -13 = -40
Step-by-step explanation: