Answer:
10 km/hr
Step-by-step explanation:
5 hrs = 40 more with 2 km/hr current
2 hrs= less 40 no current
40-2x5=30
30 without current for three hours
30/3=10 km/hr no current
***
CHECK
10x2=20
10x5=50+2x5=60
***
Hope this helps, and please mark me brainliest! thanks! >//-//<
An equation of circle has form

So, the center is (13;1)
Now we need to find a radius
Let's create an equation

So radius is 2
If I'm understanding this correctly 20 rounded to the nearest ten would be 20
You have to divide the number by the denominator of the fraction. For example, if you want to find 1/5 of 20, you have to divide 20 by 5 and that tells you that 1/5 of 20 is 4.