Factor the difference of two squares.x2 - 4
A. (x - 2)(x - 2)
B. (x + 2)(x - 2)
C. (x2 + 2)(x2 - 2)
D. (x + 4)(x - 4)
Answer: B
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A 10-pound weight is lying on a sit-up bench at the gym. If the bench is inclined at an angle of 
, there are three forces acting on the weight. N is called the normal force and it acts in the direction perpendicular to the bench. F is the force due to friction that holds the weight on the bench. If the weight does not move, then the sum of these three forces is 0.
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Find the magnitude of N and the magnitude of F. Apply the rules regarding the use of significant digits when determining your answers.
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__________ lb
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__________ lb
What will be an ideal response?
Solve the problem.Doreen and Irena plan to leave their houses at the same time, roller blade towards each other, and meet for lunch after 2 hours on the road. Doreen can maintain a speed of 3 miles per hour, which is 60% of Irena's speed. If they meet exactly as planned, what is the distance between their houses?
A. 16 miles B. 10 miles C. 9.6 miles D. 6 miles
Find the length of the curve r(t) = 2ti+t²j+1ntk, 1?t?e³
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Provide an appropriate response.Which coordinates match the point G?
A. (3, -2) B. (2, -3) C. (-2, 3) D. (-3, 2)