Use a graphing calculator to solve the equation.2x2 + 9 = 9x
A. 
, 3
B. -3, 
C. 3, 6
D. -3, - 
Answer: A
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Find the center, foci, and vertices of the ellipse.
+ 
= 1
A. center at (0, 0)
foci at (0, 6) and (5, 0)
vertices at (0, 36), (25, 0)
B. center at (0, 0)
foci at (0, - 
) and (0, 
)
vertices at (0, -6), (0, 6)
C. center at (0, 0)
foci at (- 
, 0) and (
, 0)
vertices at (-6, 0), (6, 0)
D. center at (0, 0)
foci at (0, -6) and (0, 6)
vertices at (0, -36), (0, 36)
A levee protects a town in a low-lying area from flooding. According to geologists, the banks of the levee are eroding at a rate of 7 feet per year. If something isn't done to correct the problem, what signed number indicates how much of the levee will erode during the next decade? ? __________ ft
Fill in the blank(s) with the appropriate word(s).
Multiply.(x + 5)(x - 5)(4x + 5)
A. 4x3 + 5x2 - 100x - 125 B. 4x3 - 35x2 + 50x + 125 C. 4x3 + 45x2 + 150x + 125 D. 4x3 + 5x2 + 100x + 125
In a right triangle, the legs have lengths of 5 ft and 12 ft. Using these measures, which ratio (sine, cosine, or tangent) would be used to find the measure of the acute angle that is formed by the hypotenuse and the leg of length 12 feet?
What will be an ideal response?