Perform the indicated operations.53 - 32 + 33 - 52
A. 118
B. -82
C. -118
D. 82
Answer: A
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Suppose that one leg of a right triangle is 1 foot shorter than the other leg. The hypotenuse is 1 foot longer than the longer leg. Find the lengths of all three sides of the right triangle.
A. 1 feet, 5 feet, 6 feet B. 3 feet, 4 feet, 5 feet C. 5 feet, 6 feet, 7 feet D. 4 feet, 5 feet, 6 feet E. 1 feet, 6 feet, 6 feet
Find the quadratic approximation of f at x = 0.f(x) = tan-1 4x
A. Q(x) = 4x B. Q(x) = 1 + 4x2 C. Q(x) 1 + 2x2 D. Q(x) = 1 - 4x2
Provide an appropriate response.Identify the variable and the constant in this expression: 
A. variable 8x; constant 2x3 B. variable 11; constant x C. variable x; constant 11 D. variable x; constant 8x
Solve the problem.The hydrogen ion concentration of a substance
is about 5.2 x 10-7 moles per liter. Find the pH. Round to the nearest tenth. Use the formula pH = -log [H+].
A. 6.6 B. -7.7 C. 6.3 D. 7.7