a. Your answer is correct.
b. Divide the given value of sigma by √n where n = sample size = 7. Then perform the same calculation you did for part a. The probabiilty is 0.4427.
<h3>
Answer: 16 miles</h3>
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Explanation:
x = time in hours spent going upstream
5-x = remaining time in hours spent going downstream
Those two quantities add to 5 hours total.
Let's find the expression for how far the fisherman went upstream
distance = rate*time
d = r*t
d = 2x
Do the same for the downstream portion
d = r*t
d = 8(5-x)
d = 40-8x
The values of d refer to the same distance because he came back to the starting point.
Set those right hand sides equal to one another and solve for x.
2x = 40-8x
2x+8x = 40
10x = 40
x = 40/10
x = 4
5-x = 5-4 = 1
He spent 4 hours going upstream, and the remaining 1 hour coming back downstream.
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If he spent 4 hours going upstream at 2 mph, then he traveled d = r*t = 2*4 = 8 miles.
The remaining 1 hour going downstream at 8 mph means he traveled d = r*t = 8*1 = 8 miles, which matches with the previous result. This confirms we have the correct one-way distance of 8 miles.
Therefore, the total round trip distance is 2*8 = 16 miles
Answer:
Step-by-step explanation: total income=$500
Ratio of partition of money6:3:4
( Which gives that lauren gets 6x, rachel gets 3x and Becca gets 4x)
6x+3x+4x=500
13x=$500
X=500/13 ( transposition method)
x= 38.46
So lauren gets 6(38.46)… rachel gets 3(38.46)while Becca gets 4(38.46)…
Lauren= 230.76
Rachel=115.38
Becca= 153.84
Answer:
21.3 unit
Step-by-step explanation:
unit
Answer:
315 inches
Step-by-step explanation:
Do 0.75 * 180 to find 75% of 180. This is 135.
Now add 135 to 180 to get 315. This is your answer.
