Answer:
10 mph
Step-by-step explanation:
speed of boat in still water = x
speed of current = 5
speed of boat with current (downstream) = x + 5
speed of boat against current (upstream) = x - 5
distance downstream = 9
distance upstream = 3
time = t
speed = distance/time
distance = speed × time
downstream:
9 = (x + 5)t
upstream:
3 = (x - 5)t
9 = xt + 5t
3 = xt - 5t
9 = xt + 5t
-3 = -xt + 5t
-----------------
6 = 10t
t = 0.6
9 = (x + 5)0.6
15 = x + 5
x = 10
Answer:
B
Step-by-step explanation:
it is known that 8 tomato plants were planted in total
( 2 rows with 4 plants each equal to 8 plants in total)
however there is X amount of rows of squash with 7 plants in each row
therefore in an equation it would be y= 7x+8
You could use a calculator.. or if it is already in distributive property then just add it up
Answer: 14 - 3(4)
Step-by-step explanation:
Decreased just means subtract
Yes, the boat can communicate with the diver.
See the attached picture for the solution:
