Answer: the speed at which Jonathon and Samantha can row in still water is 9 mph
Step-by-step explanation:
Let x represent the speed of the canoe in still water.
Let y represent the speed of the river's current.
Jonathon and Samantha row their canoe 28 miles downstream in 2 hours. Assuming they rowed with the current, the total speed would be (x + y) mph
Distance = speed × time
Distance travelled downstream is expressed as
28 = 2(x + y)
Dividing through by 2, it becomes
14 = x + y - - - - - - - -1
After a picnic, they row back upstream. After 3 hours they only travel 12 miles. Assuming they rowed against the current, the total speed would be (x - y) mph
Distance travelled upstream is expressed as
12 = 3(x - y)
Dividing through by 3, it becomes
4 = x - y - - - - - - - -2
Adding equation 1 and equation 2, it becomes
18 = 2y
y = 18/2
y = 9 mph
<span>20, 19, 13, 23, 16, 15, 17, 17, 15, 15, 22, 19
</span>To find the Median, place the numbers in value order<span> and find the </span>middle<span>.
</span>
13, 15, 15, 15, 16, 17, 17, 19, 19, 20, 22, 23
There are 12 numbers and so we don't have just one middle number, we have a pair of middle numbers:
13, 15, 15, 15, 16,
(17, 17), 19, 19, 20, 22, 23
<span>To find the value halfway between them, add them together and divide by 2:
</span>
17 + 17 = 34
34 ÷ 2 = 17
So the median is A) 17.
The answer to the question is 22 .
Answer:
0.5
Step-by-step explanation:
total tiles = 12
green tiles = 6
so : 6/12 = 0.5
Answer:
D
Step-by-step explanation:
I've said it before, that's the answer on edge!
