Add. 11 + (-11) + 18 + (-20)

A. 60
B. -2
C. -38
D. 2


Answer: B

Mathematics

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The spectroscopic parallax of a star is the difference between the apparent magnitude, which is the brightness of light from the star reaching Earth, and the absolute magnitude, which is the intrinsic brightness. The spectroscopic parallax  S can be used to calculate the distance d, in parsecs, from Earth to the star. The relationship is

. A:  Find the spectroscopic parallax of a star that is 10.96 parsecs from Earth.B: Find the distance from Earth of a star that has a spectroscopic parallax of 5.C: Star A is 5 times as far from Earth as star B.  How do their spectroscopic parallaxes compare? ? Round your answer to two decimal places if necessary. ? What will be an ideal response?

Mathematics

Use DeMoivre's Theorem to find the following. Write your answer in standard form. ?   ?

A.
B.
C.
D.
E.

Mathematics

Find the amplitude or vertical shift as requested.Find the amplitude of f(x) =  cos x - 

A. 5
B. - 
C. - 
D.

Mathematics

State the name of the property illustrated.(x + 4) + [-(x + 4)] = 0

A. Inverse property of addition B. Inverse property of multiplication C. Identity property of multiplication D. Commutative property of addition

Mathematics