Answer the question.What type of figure is formed by joining the midpoints of the adjacent sides of a rhombus?
Fill in the blank(s) with the appropriate word(s).
A square.
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Find all the roots of the complex number. Put answers in standard form.Cube roots of -8j
A. 2j, - 
+ j, - 
+ j
B. 2j, - 
- j, 
- j
C. -2j, 
- j, 
- j
D. -2j, 
+ j, 
+ j
Solve the problem.Use each of the numbers 7, 8, 9, 10, and 11 once and only once to fill in the circles so that the sum of the numbers in the three horizontal circles equals the sum of the numbers in the three vertical circles. 
Which numbers can be placed in the middle of the horizontal row?
A. 7, 8, and 9 B. 9, 10, and 11 C. 8, 9, and 10 D. 7, 9, and 11
Solve the problem.n! =
A. n × (n - 1)! B. n! + (n - 1)! C. n! × (n - 1)! D. n + (n - 1)! E. none of these
In tests conducted by Auto Test Magazine on two identical models of the Phoenix Elite - one equipped with a standard engine and the other with a turbo-charger - it was found that the acceleration of the former is given by
?
?
ft/sec, t seconds after starting from rest at full throttle, whereas the acceleration of the latter is given by
?
?
?
ft/sec. How much faster is the turbo-charged model moving than the model with the standard engine at the end of a 10-second test run at full throttle?
?
__________ ft/sec
Fill in the blank(s) with the appropriate word(s).