Divide. Write the answer in simplest form.1 ÷ 
A. 
B. 2
C. 2
D. 
Answer: B
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Solve the problem. Assume the x-axis is horizontal, the positive y-axis is vertical (opposite g), the ground is horizontal, and only the gravitational force acts on the objects. A projectile is fired with an initial speed of 569 m/sec at an angle of 45°. What is the greatest height reached by the projectile? Round your answer to the nearest tenth.
A. 8,259.2 m B. 82.1 m C. 33,036.8 m D. 80,940.3 m
Find the dimensions of the null space and the column space of the given matrix.A = 
A. dim Nul A = 4, dim Col A = 1 B. dim Nul A = 2, dim Col A = 3 C. dim Nul A = 3, dim Col A = 3 D. dim Nul A = 3, dim Col A = 2
Solve the problem.A person standing close to the edge on top of a 240-foot building throws a baseball vertically upward. The quadratic equation 
models the ball's height above the ground, s, in feet, t seconds after it was thrown. After how many seconds does the ball reach its maximum height? Round to the nearest tenth of a second if necessary.
A. 1.5 seconds B. 304 seconds C. 6.4 seconds D. 2 seconds
Solve the equation by completing the square. m2 - 18m + 81 = 0
A. {-9} B. {9} C. {± 9} D. {18}