Let the speed of the current be x mi/hr
speed upstream=(12-x) mi/hr
speed downstream=(12+x) mi/hr
It takes 3 hours longer to travel upstream than downstream, thus
time taken upstream=68/(12-x)
time taken to travel downstream=68/(12+x)
the difference in time will be:
68/(12-x)-68/(12+x)=3
solving for x we get:
x=2.98 mi/hr
Thus the rate of current is 2.98 mi/hr
Answer:
There is not enough information here to solve your problem
Step-by-step explanation:
Use the left and right triangles. (the two smaller ones -- ACD and BCD)
By similar triangles ACD is similar to BCD
on the left AD/CD is one ratio
On the right CD/DB is the other. These two ratios are equal because they are corresponding parts.
AD / CD = CD / DB
AD = 3
DB = 12
CD = ??
Substitute.
3/CD = CD/12 Cross multiply
36 = CD^2
sqrt(36) = sqrt(CD^2)
CD = 6 <<<<==== Answer.
A <<<<====Answer.
Answer:
Question 1. Multiply 4 by 2
Question 2 . 85 + 6*7 = 127
Question 3. 24 + 3*5 = 39
Question 4. 16.75 + 32.5*9 = 46
Question 5. 2*0.4^2 + 4*0.4*3 = 5.12 (Im not positive that this one is correct or not but I tried my best)
You can get through anything if you really set your mind to it don’t let your words or anyone else’s words inhibit you
