Mathematics, 03.12.2020 01:30 grumpygreengori
What two properties of a Cepheid variable star do we need to know in order to calculate the approximate distance from Earth?
(choose two)
1.) luminosity
2.) parallax
3.) color
4.) heat intensity
5.) exact size
6.) apparent magnitude
Answers: 2
Mathematics, 21.06.2019 20:30
Which equation expression the relationship between the number of boxes b and the number of cans c and the proportion is 48
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Acircle has a circumference of 7.850 units. what is its radius?
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Mathematics, 21.06.2019 22:00
Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.
Answers: 1
Mathematics, 21.06.2019 22:30
What is the approximate value of x in the equation below.–3.396–0.7080.3040.955
Answers: 1
What two properties of a Cepheid variable star do we need to know in order to calculate the approxim...
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