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Unexpected orbital velocities of stars around the centers of galaxies led astronomers to predict the existence of dark _____. a. energy b. forces c. matter d. space e. galaxies

asked May 21, 2018

Physics
high-school

2 answers

5 votes

99.5k views

HELP IMIDAIEALTY PLEASE

asked Jan 26, 2018

Mathematics
college

2 answers

1 vote

72.3k views

Given a = -3, b = 4 and c = -5, evaluate a - b - c. -12 -6 -2

asked Jun 8, 2017

Mathematics
high-school

1 answer

2 votes

131k views

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