Provide an appropriate response.Describe the elements of a 4 × 4 identity matrix.
A. The matrix has zeroes on the main diagonal. All other elements are ones.
B. All elements of the matrix are ones.
C. The matrix has ones on the main diagonal and zeroes below the main diagonal.
D. The matrix has ones on the main diagonal, and all other elements are zero.
Answer: D
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A. 92 B. 105 C. 68 D. 119
Solve the problem.Find the exponential function that models the data in the table below.
A. f(x) = 22 ? 0.7x B. f(x) = 10.78 ? 1.3x C. f(x) = 15.4 ? 1.7x D. f(x) = 10.78 ? 0.7x
Solve the problem.A mixture of chlorine and water contains a total of 48 gallons of liquid. There are 20 gallons of pure chlorine in the mixture. (i) What percent of the mixture is water? (ii) What percent of the mixture is chlorine? Round to the nearest percent, if necessary.
A. (i) 58% water; (ii) 42% chlorine B. (i) 20% water; (ii) 80% chlorine C. (i) 42% water; (ii) 58% chlorine D. (i) 33% water; (ii) 67% chlorine
Solve the equation by multiplying both sides by the LCD.2 + 
=
A.
B. 
C. 
D. 