Factor the difference of two squares.4x2 - 49
A. (2x + 7)2
B. (2x - 7)2
C. (2x + 7)(2x - 7)
D. (4x + 1)(x - 49)
Answer: C
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Solve the problem.Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. A vending machine will only accept coins weighing between 5.47 g and 5.77 g. What percentage of legal quarters will be rejected?
A. 2.48% B. 0.0196% C. 3.95% D. 1.62%
Solve the equation.
- 
= 1
A. 1
B. 
C. 
D. - 
Answer the following statement(s) true (T) or false (F)
Research indicates that placing manipulatives in front of students automatically causes immediate gains in student learning.
Find the center, foci, and vertices of the ellipse.
+ 
= 1
A. center at (0, 0)
foci at (0, -4) and (0, 4)
vertices at (0, -16), (0, 16)
B. center at (0, 0)
foci at (- 2
, 0) and (2
, 0)
vertices at (-4, 0), (4, 0)
C. center at (0, 0)
foci at (0, 4) and (2, 0)
vertices at (0, 16), (4, 0)
D. center at (0, 0)
foci at (0, - 2
) and (0, 2
)
vertices at (0, -4), (0, 4)