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
Answer: D
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Solve the problem.A child throws a ball with a speed of 8 feet per second at an angle of 75° with the horizontal. Express the vector described in terms of i and j. If exact values are not possible, round components to 3 decimals.
A. -2.071i + 7.727j B. 7.727i - 2.071j C. 7.727i + 2.071j D. 2.071i + 7.727j
Write the augmented matrix for the system. 6x + 6y + 8z = 56 9x + 4y + 3z = 18 7x + 8y - 2z = 26
A. 
B. 
C. 
D. 
Determine whether the relation represents a function. If it is a function, state the domain and range.{(-3, 6), (0, 3), (3, -4), (7, -1)}
A. function domain: {-3, 0, 3, 7} range: {6, 3, -4, -1} B. function domain: {6, 3, -4, -1} range: {-3, 0, 3, 7} C. not a function
Use reference angles to find the exact value of the expression. Do not use a calculator.csc 600°
A. - 
B. - 
C. - 
D. - 