Decide what number must be added to the binomial to make a perfect square trinomial.x2 - 
x
A. - 
B. 
C. 
D. - 
Answer: B
Mathematics
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Factor.x2 - x - 72
A. (x + 8)(x - 9) B. (x + 9)(x - 8) C. Prime D. (x + 1)(x - 72)
Mathematics
Solve the problem.Assume that the seed triangle of the Sierpinski ternary gasket has area A = 2. Find the area of the
obtained in Step 3 of the construction.
A. 
B. 
C. 
D. 
E. 
Mathematics
Find the value of ? in the interval [0°, 360°) that satisfies the given conditions.cos ? = - 
and ? in quadrant II
A. 150° B. 120° C. 240° D. 210°
Mathematics
Solve the problem.In one community 67
% of all children had no health insurance. Write this percent as a decimal.
A. 67.5 B. 6.75 C. 0.675 D. 0.0675
Mathematics