Pe o tablità era scris numărul 261. Narcis dorește să afle care este diferenta dintre triplul şi îndoitul lui. El observă că diferența obţinută este egală cu înșesitul numărului. Esti de acord cu Narcis?
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Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true

Which expression is the factorization of x^2+10+21

In the diagram, be and ad pass throughthe center of circle o, and the area ofsector aoc is 47.45 square units. what isthe area of sector boc? use the value =3.14, and round your answer to two decimalplaces.22.33 square units25.12 square units