Indicate whether the value of x shown is a solution to the given equation.3x = 21, x = 7
A. No
B. Yes
Answer: B
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Find the potential function f for the field F.F = 
i + 
j - 
k
A. f(x, y, z) = 
+ C
B. f(x, y, z) = 
+ ln z + C
C. f(x, y, z) = 
+ C
D. f(x, y, z) = 
+ C
A diagonal brace is to be placed in the wall of a room. The height of the wall is 7 ft, and the wall is 15 ft long. What is the exact length of the brace? ?
A. 
B. 
C. 17
D. 
E. 13
Solve the problem.Two LORAN stations are positioned 278 miles apart along a straight shore. A ship records a time difference of 0.00086 seconds between the LORAN signals. (The radio signals travel at 186,000 miles per second.) Where will the ship reach shore if it were to follow the hyperbola corresponding to this time difference? If the ship is 200 miles offshore, what is the position of the ship?
A. 59 miles from the master station, (161.9, 200) B. 80 miles from the master station, (161.9, 200) C. 80 miles from the master station, (200, 161.9) D. 59 miles from the master station, (200, 161.9)
Determine if the number is prime, composite, or neither.74
A. Prime B. Composite C. Neither