Answer:
1.9°C
Step-by-step explanation:
Let X be the temperature at noon and -2.5°C be the current temperature after the drop.
-We calculate temperature at noon as:

Hence, the temperature at noon was 1.9°C
Answer:
Observational study
Step-by-step explanation:
There are 3 types of statistical study:
1) Experimental: Under this, any experiment is done on a certain group of population.
2) Observational: Under this study, the events are observed regularly and the record is made.
3) Survey : Under this study, a survey is conducted with a a group of population and the record is made.
According to question, A meteorologist keeps hourly temperature records over the course of several years in order to look for long-term variations, this is an example of <u>observational study</u>.
Answer:
-12
Step-by-step explanation:
-5 7 = -12
Answer:
20m
Step-by-step explanation:
5+3+1+7+4=20
In this question, we have to identify the zeros of the polynomial, along with a point, and then we get that the formula for the polynomial is:

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Equation of a polynomial, according to it's zeros:
Given a polynomial f(x), this polynomial has roots such that it can be written as: , in which a is the leading coefficient.
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Identifying the zeros:
Given the graph, the zeros are the points where the graph crosses the x-axis. In this question, they are:

Thus





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Leading coefficient:
Passes through point (2,-8), that is, when
, which is used to find a. So




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Considering the zeros and the leading coefficient, the formula is:

A similar problem is found at brainly.com/question/16078990