Tell whether each of the following statements is true or false.
a. {Real} ? {Integers}
b. {Naturals} ? {Real}
a. {Real} ? {Integers}
Mathematics
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Matrix A is given. Find appropriate identity matrices Im and In such that ImA = A and AIn = A.A = 
A. Im = 
, In = 
B. Im = In = 
C. Im = 
, In = 
D. Im = In = 
Mathematics
Solve.How much energy is required to lift a 26-pound dog 9 feet?
A. 7002 ft-lb B. 35 ft-lb C. 20,228 ft-lb D. 234 ft-lb
Mathematics
If possible, factor the polynomial completely. If a polynomial cannot be factored, state that it is prime.x2 + 6x - 40
A. Prime B. (x - 10)(x + 4) C. (x + 10)(x - 4) D. (x - 10)(x + 1)
Mathematics
Evaluate the integral.
A. 
[e(3 + y2) - e(1 + y2) ]
B. 3e(x + 9) - e(x + 1)
C. 
[e(x + 9) - e(x + 1)]
D. y[e(3 + y2) - e(1 + y2) ]
Mathematics