PLEASE HELPPP
Chlorinated hydrocarbon pesticides, such as DDT, were introduced during World War II to control insects
in agricultural crops. All of the following statements about chlorinated hydrocarbons are true EXCEPT:
A. They are safe for all organisms except insect pests.
B. They are inexpensive and easy to apply.
C. They persist for a long time in the environment.
D. They boost crop yields by killing pests.

Answer:

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Explanation:

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Answer:

Rather than just defining a vision or mission statement, we ask entrepreneurs to create a vision model, which combines three things: your core values, organizational purpose, and a big, hairy audacious goal (BHAG).

Answer:

Primary cell with a nominal open circuit voltage of 1.5 Volts produced in very high volumes. Chemistry based on a zinc anode and a cathode/depolariser of manganese dioxide which absorbs the liberated hydrogen bubbles which would otherwise insulate the electrode from the electrolyte.

Answer:

Explanation:

(1) The electrolyte is a paste of ammonium chloride.

(2) The positive terminal (anode) is a carbon rod surrounded bymangAnese Dioxide as a depolarised .

(3) The negative terminal is zinc container.

Answer:

1970

Explanation:

the answer must enough 20 character, so I...

Answer:

The early 1970s.

Average age in a population. Suppose the 100-vector x represents the distribution of ages in some population of people, with xi being the number of i−1 year olds, for i = 1, . . . , 100. (You can assume that x 6= 0, and that there is no one in the population over age 99.) Find expressions, using vector notation, for the following quantities. (a) The total number of people in the population. (b) The total number of people in the population age 65 and over. (c) The average age of the population. (You can use ordinary division of numbers in your expression.) (d) Does an unbiased estimate for the average age of the population exist?

(a) We can just add up all the xi and get 100 x −1. (b) Let's suppose we want to find y, such that \frac{y}{100} is an unbiased estimate for \frac{\sum_{i=1}^{100}x_i}{100}. Then \frac{y}{100} = \frac{\sum_{i=1}^{100}x_i}{100}. Let's now plug in 100 x −1 for \sum_{i=1}^{100}x_i. This means y = \frac{99 x −1}{100}. (c) Recall that the average of a vector is 0 x + 1. Then the average age of the population is 0(100 − 1) + 1 = 50. (d) No, because \frac{y}{100} ≠ \frac{\sum_{i=1}^{100}x_i}{100}.

(a) The total number of people in the population is 100 x −1. (b) Let's suppose we want to find y, such that \frac{y}{100} is an unbiased estimate for \frac{\sum_{i=1}^{100}x_i}{100}. Then \frac{y}{100} = \frac{\sum_{i=1}^{100}x_i}{100}. Let's now plug in 100 x −1 for \sum_{i=1}^{100}x_i. This means y = \frac{99 x −1}{100}. (c) Recall that the average of a vector is 0 x + 1. Then the average age of the population is 0(100 − 1) + 1 = 50. (d) An unbiased estimate for the average age of the population exists, because \frac{y}{100} ≠ \frac{\sum_{i=1}^{100}x_i}{100}.

50 People are 65 and over

The number of people who are 65 and older is 50 x − 1 = 45.

I think this may be either (b) or (c). An unbiased estimate for the average age of the population exists because \frac{y}{100} ≠ \frac{\sum_{i=1}^{100}x_i}{100}. An unbiased estimate is \frac{99 x −1}{100}.

(c) Recall that the average of a vector is 0 x + 1. Then the average age of the population is 50. (b) Let's suppose we want to find y, such that \frac{y}{100} is an unbiased estimate for \frac{\sum_{i=1}^{100}x_i}{100}. Then \frac{y}{100} = \frac{\sum_{i=1}^{100}x_i}{100}. Let's now plug in 100 x −1 for \sum_{i=1}^{100}x_i. This means y = \frac{99 x −1}{100}. (d) No, because \frac{y}{100} ≠ \frac{\sum_{i=1}^{100}x_i}{100}.

45 People are 65 and over

The number of people who are 65 and older is 45. There is no unbiased estimate for the average age of a population.

(b) Let's suppose we want to find y, such that \frac{y}{100} is an unbiased estimate for \frac{\sum_{i=1}^{100}x_i}{100}. Then \frac{y}{100} = \frac{\sum_{i=1}^{100}x_i}{100}. Let's now plug in 100 x −1 for \sum_{i=1}^{100}x_i. This means y = \frac{99 x − 1}{100}. (c) Recall that the average of a vector is 0 x + 1. Then the average age of the population is \frac{99 x −1}{100}. (d) An unbiased estimate for the average age of a population exists, because \frac{y}{100} ≠ \frac{\sum_{i=1}^{100}x_i}{100}.

Explanation:

150 divide by 150 and that how you do the is you what to divide together 15/ 150 you welcome have a good day is you need something else

Answer:

Psychology is considered a science because it uses a systematic method of asking and answering problems, and it attempts to develop solutions to psychological problems.

hospital, school, streets

School, hospital, bank are three buildings

Answer:

The permittivity measures the obstruction produces by the material in the formation of the electric field, whereas permeability is the ability of the material to allow magnetic lines to conduct through it. The free space of the permittivity is 8.85 F/m, whereas that of the permeability is 1.26 H/m.

Explanation:

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Math

It’s will be tunma if I’m correct

Answer:

Positive logic is defined as a high voltage level representing a logic 1 and a low voltage level representing a logic 0. Negative logic is the reverse, i.e., a low voltage level represents a logic 1 and a high voltage level represents a logic 0.

Explanation:

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Answer:

Explanation:

The most common HFC used in air conditioners is R-410A. This refrigerant is better than R-22 in terms of “Ozone Depletion” potential and energy efficiency, but it still causes global warming. A few more HFCs that are commonly used are: R-32 in Air Conditioners and R-134A in refrigerators.

Answer:

The most common refrigerants used for air conditioning over the years include

Explanation:

The most common refrigerants used for air conditioning over the years include.

Answer:

b) making the language clear

Answer:Pls answer and I will give a like!

Explanation:I say itś the 1st answer (devaloping a focus)

if im wrong im super sry bye