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Dimas [21]
3 years ago
15

Which size random sample is likely to provide the most trustworthy results

Mathematics
1 answer:
Zarrin [17]3 years ago
4 0
At least 30 observations to get a reasonably normal distribution.
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Bryan hiked up to the top of City Creek in 3 hr and then returned down the canyon to the trailhead in another 2 hr. His speed do
kati45 [8]
Still need your answer ?

7 0
3 years ago
Please answer correctly !!!!!! Will mark brainliest answer !!!!!!!!!!
Rasek [7]

Answer:

see below

Step-by-step explanation:

1. 0 = (r + 1)(r + 8)

Using Zero Product Property, r = -1, r = -8

2. h(r) = (r + 1)(r + 8)

         = r² + 9r + 8

         = (r + 9/2)² - 81/4 + 8

         = (r + 4.5)² - 12.25 (Complete the square)

   Vertex: (-4.5, -12.25)

5 0
3 years ago
Y=-1/2x+1 and y=1/3+6
-Dominant- [34]
If your teacher taught rise over run, then for the graphs:

y=-1/2x+1
start at y intercept of 1, then down 1, right 2 all the way, same for the other side but reversed.

y= 1/3+6
start at y intercept of 6, then up 1, right 3 all the way, same for the other side but reversed.

One solution: (-6,4)
4 0
3 years ago
Read 2 more answers
6 4/5 - 2 1/5 is what?
pogonyaev
6-2=4     whole number
4/5-1/5=3/5 fraction
  put the fraction and whole number toger and you'll get
since the denominator is the same it's easier to subract

4 3/5    <--- answer
3 0
3 years ago
Read 2 more answers
If x - 1 upon x = 2 then find the value of x + 1 upon x<br>please answer​
stepladder [879]
X-1/x= 2
x-1=2x
x-2x=1
-x=1
x=-1

x+1/x
-1+1/-1
0/-1
0
it equals 0
5 0
2 years ago
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