This could be one of two things, I need a bit more information, but perhaps you can decide.
Drip irrigation otherwise called trickle irrigation delivers water using tubes and emitters to the base of the plant. Subsurface irrigation uses a combination of tubes and emitters and is buried under ground. Good luck
Answer:
Kinh tế công nghiệp là môn nghiên cứu về các doanh nghiệp, ngành và thị trường. Nó nhìn vào các công ty thuộc mọi quy mô - từ các cửa hàng góc địa phương đến những người khổng lồ đa quốc gia như WalMart hay Tesco. Và nó xem xét một loạt các ngành công nghiệp, chẳng hạn như sản xuất điện, sản xuất xe hơi và nhà hàng.
<h3>Answer:</h3>
- A — 1
- B — ∑[k=0..2] 15Ck(.24^k)(.76^(15-k))
- D — 12 and 3.1
- A — 0.1091
- B — 0.83 ...
<h3>Explanation:</h3>
1. The probability is 0.52 that the officer will pull over a driver and then the expected number more. So, if x is the expected number of drivers pulled over until one is not texting, we have ...
... x = 0.52(1+x)
... 0.48x = 0.52
... x = 0.52/0.48 = 13/12 = 1 1/12 ≈ 1 . . . . matches selection A
(<em>Comment on this result</em>: I find it interesting that these are the odds in favor of finding a driver who texts. That is, if the probability of texting is 0.98, the odds are 49:1 that a driver will be texting, and the expected number of pull-overs is 49.)
2. The probability of at most 2 being cured is the probability of 0, 1, or 2 being cured. You need to add up those probabilities. The sum in answer selection B does that.
3. The mean of a binomial distribution is ...
... μx = np = 60·0.2 = 12
... σx = √(np(1-p)) = √(12·0.8) ≈ 3.0984
These match selection D.
4. 20C14(0.8^14)(0.2^6) = 38760·.043980·0.000064 ≈ 0.109100 . . . matches A
5. mean(x) = 0.94; mean(x^2) = 1.58, so ...
... σx = √(1.58 -0.94²) ≈ 0.83 . . . . matches selection B
Answer:
y = 156 when x = 12
Explanation:
<em>y</em> varies directly with <em>x</em>: y = kx
Step 1: Plug in variables
65 = 5k
Step 2: Solve for <em>k</em>
<em>k</em> = 13
Step 3: Plug in other variables (new)
y = 13(12)
y = 156
Human activities that contribute to desertification include the expansion and intensive use of agricultural lands, poor irrigation practices, deforestation, and overgrazing.
