Subtract. Simplify, if possible.-8 - 

A. 7
B. -6
C. 10
D. -6


Answer: B

Mathematics

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Find T, N, and B for the given space curve.r(t) = (cosh t)i   + (sinh t)j  + k 

A. T = -  (tanh t sech t)i  + j  + (sech t)k; N = (-sech t)i  - (tanh t)k
B. T = (tanh t sech t)i  + j  + (sech t)k; N = (sech2 t)i  - (sinh t)k;  
C. T = (tanh t)i  + j  + (sech t)k; N = (sech t)i  - (tanh t)k
D. T = - (tanh t)i  + j  + (sech t)k; N = (-sech t)i  - (sinh t)k  ; 

Mathematics

List the coefficients of the polynomial. 9y - y2 - 2y4  + y6

A. 9y, - y2-2y4 , y6
B. 1, 2, 4, 6
C. 9, 0, -2
D. 9-1, -2

Mathematics

Simplify

Mathematics

Solve.Find the hydrogen ion concentration of a solution whose pH is 5.9. Use the formula 

A. 0.77085201 B. 1.26 × 10-6 C. -0.770852 D. 7.94 × 105

Mathematics