Add or subtract as indicated. Write the answer in simplest form. -  - 

A.
B.
C. - 
D. - 


Answer: D

Mathematics

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Provide the proper response.It can be shown that a hyperbola with center at the origin, foci at  and  and equation  has equation  Use this result to find an equation of a hyperbola with center at the origin, foci at  and 

src="https://sciemce.com/media/4/ppg__10701191713__f1q41g6.jpg" alt="" style="vertical-align: -4.0px;" /> and absolute value of the distances from any point of the hyperbola to the two foci equal to 4.

A.  -  = 1
B.  -  = 1
C. x2 - y2 = 4
D.  -  = 1

Mathematics

Provide an appropriate response.The Consumer Price Index is increasing at a rate of 8% per year. What is its doubling time? Use the approximate doubling time formula (rule of 70).

A. 256 years B. 5.6 years C. 16 years D. 8.75 years

Mathematics

Use an Euler diagram to determine whether the argument is valid or invalid.Some TV shows are comedies.All comedies are hits.  Therefore, Some TV shows are hits.

A. valid B. invalid

Mathematics

List the terms of the expression. Then identify the coefficient of each term.3c2 - 7c - nt

A. 3c2, -7c, -nt; 3, -7, -1 B. 3c2, 7c, nt; 3, 7, 1 C. -3c2, -7c, -n, t; 3, -7, -1, 1 D. -3c2, -7c, -nt; 3, 7, 1

Mathematics