Solve the following system by any appropriate method. If there is no real number solution, so state.y2 + 3x2 = 37y2 - x2 = 1
A. (3, -
), (3, 
)
B. (4, 
), (4, -
), (-4, 
), (-4, -
)
C. (3, 
), (-3, 
)
D. (3, 
), (3, -
), (-3, 
), (-3, -
)
Answer: D
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Graph the curve whose parametric representation is given. x = 4 cos2 t , y = 2 sin2t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
Provide an appropriate response.Solve the following equation: 
y = 20
Fill in the blank(s) with the appropriate word(s).
Provide an appropriate response.The formula for finding simple interest is I = PRT, where I is the amount of interest charged, P is the principal amount borrowed, R is the percent of interest charged, and T is the length of time of the loan. If the amount of interest is $36.25, the principal is $250, and the time is 2 years, what interest rate was charged?
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Solve the problem.Find the volume V of a sphere of diameter 7 cm. Use 3.14 for ?. If necessary, round the result to the nearest tenth.
A. V = 101 cm3 B. V = 1436 cm3 C. V = 179.5 cm3 D. V = 51.3 cm3