Answer:
x = -15
y = 15
Explanation:
3x-2y=15 and 2x + 2y = 0 the second equation can be written as x + y = 0
x + 2x - 2y = 15
-x - (2x + 2y) = 15 we know that 2x + 2y is equal to 0
-x -(0) = 15
-x = 15
x = -15 and if x + y = 0 then -15 + y = 0 and y = 15
Answer: Response bias
May perform polling by professional workers
Explanation:
(A) Response bias can be defined as the condition in which the bias is caused due to the participants self report, such as structured interviews or surveys.
In this case the samples is being collected by the teachers of the schools so there can be biasing in the sample.
(B) The possible remedy to this problem is that the survey must not be conducted by the bias person. The sample must be collected from the polling professional social workers that does not belong to any of the schools.
The sample collected by them would not be biased, it would be completely unbiased.
Answer:
Endothermic reactions are those that must absorb energy from their surroundings. This can include absorbing heat from the container they are in, or from your fingertips. The result is that both the container and your fingers will feel cold.
Answer:
The infrastructure of development are communication, education, health, power, market, commerce, irrigation and leisure facilities.