Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
Answer: A
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Find the general solution of the differential equation. Use C, C1, C2, . . . to denote arbitrary constants. If used, do not simplify hyperbolic functions.y'(t) = 12t5 - 12t2 + 4 - 12t-3
A. y = 2t6 - 4t3 - 4t - 6t-2 + C B. y = 2t6 - 4t3 + 4t + 6t-2 + C C. y = 2t6 - 4t3 + 4 + 6t-2 + C D. y = 2t6 - 4t3 + 4t - 6t-2 + C
Solve the problem.Infant mortality rate is given as the number of deaths per 1000. The mortality rate in country A is 6 less than 9 times the infant mortality rate of country B. The difference in the two mortality rates is 114. Find the mortality rate of each country.
A. country A: 133; country B: 19 B. country A: 165; country B: 19 C. country A: 129; country B: 15 D. country A: 126; country B: 12
Add or subtract as indicated.-0.193 - (-0.7874)
A. 0.6044 B. 0.5944 C. 0.5934 D. 0.6944
Add.(-39) + 36 + (-74)
A. -149 B. 77 C. -77 D. 71