Factor.x3 - y6
A. (x - y2)(x2 - x y2 + y2)
B. (x - y2)(x2 + x y2 + y2)
C. (x + y2)(x2 + x y2 + y2)
D. (x + y2)(x2 - x y2 + y2)
Answer: B
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A projectile is fired with an initial speed of 200 m/s and angle of elevation 60°. Find the range of the projectile. Select the correct answer.
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Solve the problem.Jane wants to buy a photocopier. The salesman has the following information on 3 models. If all 3 are used, a specific job can be done in 50 minutes. If copier A operates for 20 minutes and copier B for 50 minutes, one-half the job is finished. If copier B operates for 30 minutes and copier C for 80 minutes, three-fifths of the job is done. Which is the fastest copier, and how long does it take for this copier to finish the whole job?
A. C is fastest; 120 min B. C is fastest; 100 min C. B is fastest; 100 min D. A is fastest; 120 min
Graph the parabola and label the vertex. Find the x-intercept.x = -4(y + 5)2 - 6
A. vertex (-6, -5), x-intercept (94, 0)
B. vertex (6, -5), x-intercept (106, 0)
C. vertex (-6, -5), x-intercept (-94, 0)
D. vertex (6, -5), x-intercept (-106, 0)
Complete the factoring.x2 - 2x - 48 = (x - 8)( )
A. x - 6 B. x + 6 C. 8 - x D. x2 + 8