Quadratic expressions of the form a2 - b2 are known as the difference of two squares. They factor as follows,. Factor the given expression.4x2 - 49

A. (2x + 7)2
B. (2x - 7)2
C. (2x + 7)(2x - 7)
D. prime


Answer: C

Mathematics

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Solve the absolute value equation. = 

A. x = - 
B. x = 
C. no solution
D. x = - , 9

Mathematics

Solve the problem.When an object is dropped to the ground from a height of h meters, the time it takes for the object to reach the ground is given by the equation t = , where t is measured in seconds. If an object falls 122.5 meters before it hits the ground, find the time it took for the object to fall.

A. 5 sec B. 25 sec C. 6 sec D. 8 sec

Mathematics

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A. y = 67.3 + 1.07x B. y = 33.7 - 2.14x C. y = -67.3 + 1.07x D. y = 33.7 +2.14x

Mathematics

Solve the equation. Express radicals in simplest form.n2 = -289

A. {-17} B. {17} C. {-17, 17} D. ?

Mathematics