2 years ago

Plz help me with this

2 answers:

4 0

hey friend it is Observational study because it says that her records hourly temperature over the course of several years in order to make a decision(variations) or to analyse his experiments. ;)

Svetllana [295]2 years ago

3 0

Answer: B) Observational Study

<u>Step-by-step explanation:</u>

A) Experiment is when the researcher influences the results in some manner

B) Observational Study is when the researcher observes or measures the data but does not influence the results.

C) Survey is when the researches collects data from a sample group to evaluate data about a larger group.

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ab has one endpoint at A (7,9) ,and its midpoint is at (6,7). what are the coordinates of B,the other andpoint of AB

Nastasia [14]

Answer:

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Step-by-step explanation:

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2 years ago

Hat is the center and radius of the circle with equation (x − 5)2 + (y + 3)2 = 16?

fgiga [73]

$\bf \textit{equation of a circle}\\\\ 
(x-{{ h}})^2+(y-{{ k}})^2={{ r}}^2
\qquad 
center~~(\stackrel{}{{{ h}}},\stackrel{}{{{ k}}})\qquad \qquad 
radius=\stackrel{}{{{ r}}}\\\\
-------------------------------\\\\
(x-5)^2+(y+3)^2=16\implies [x-\stackrel{h}{5}]^2+[y-(\stackrel{k}{-3})]^2=\stackrel{r~~2}{4}$