Solve the problem.The string on a balloon is 56 mm long. What is this length measured in cm?
A. 560 cm
B. 5600 cm
C. 5.6 cm
D. 0.6 cm
Answer: C
Mathematics
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Solve the problem.Find the center of mass of a thin triangular plate bounded by the coordinate axes and the line 
if 
.
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Mathematics
Simplify the expression.
A. 
B. 81
C. not a real number
D. 3
Mathematics
Solve the problem.The pH of a chemical solution is given by the formula pH = -log10[H+] where [H+] is the concentration of hydrogen ions in moles per liter. Find the pH if the [H+] = 4.7 × 10-12.
A. 12.33 B. 11.67 C. 11.33 D. 12.67
Mathematics
Use the graph of y = g(x) to answer the question.
Find the y-intercept(s), if any, of g.
A. 0
B. - 
C. -1
D. 3
Mathematics