Find, correct to the nearest degree, the angle between the planes.
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a. 122°
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Use a calculator to approximate the number. (Round your answer to three decimal places.)
?
?
A. 5.000.000 B. 3.487 C. 1.487 D. 2.487 E. -2.487
Plot and label the given points.(-2, -6), (-5, 1)
What will be an ideal response?
Simplify the radical expression. Assume that all variables represent positive real numbers.
A. 
B. 
C. x9
D. 9x9
Solve.Two particles, m1 and m2, collide in a head-on, one-dimensional, elastic collision. If the first particle had an initial speed of 1 m/sec and the second particle was initially at rest, then the final speeds of the two particles, v1 and v2 (in m/sec), are as follows: v1 = 
v2 = 
Express the difference between the final speeds (v1 - v2) as a single rational expression.
A. 
m/sec
B. 1 m/sec
C. 
m/sec
D. -1 m/sec