Answer:

Step-by-step explanation:
The systems of equations are
Let us assume the rate of the current be c
Now actual speed against the current is (15 - c)
And, the actual speed with the current is (15 + c)
Here we applied the time formula i.e. distance by speed
Also the upstream time - downstream time = 4
Now the equations are

<span> 6,632,512
</span><span>the place value of the 3 is 30,000
hope it helps</span>
40 because 3+6+12 = 21 and 8+11+21 =40
The value of x (if it’s a side length) should be 6 inches
Answer:
do you mean "8.469"? of so 8.5
Step-by-step explanation:
assuming the comma should be a decimal