Match the correct function to the graph.
A. y = -2x2 - 1
B. y = -2x2 + 1
C. y = 1 - x2
D. y = -2x2
Answer: B
Mathematics
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Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.15x2 + 19x + 6
A. (15x + 2)(x + 3) B. (3x - 2)(5x - 3) C. (3x + 2)(5x + 3) D. prime
Mathematics
Find the area.
A. 10 cm2
B. 20 cm2
C. 50 cm2
D.
| 25 cm2 |
Mathematics
If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.r(t) = (cot t)i + (csc t)jFind the velocity vector.
A. v(t) = (-sec2 t)i - (tan t sec t)j B. v(t) = (sec2 t)i + (tan t sec t)j C. v(t) = (csc2 t)i + (cot t csc t)j D. v(t) = (-csc2 t)i - (cot t csc t)j
Mathematics
Write the vector v in terms of i and j whose magnitude 
and direction angle ? are given.
= 6, ? = 270°
A. v = -6i - 6j
B. v = -6i
C. v = -6j
D. v = 6
Mathematics