Solve the linear equation.-2(k + 5) - (-3k - 9) = -7

A. {6}
B. {- 8}
C. {- 6}
D. {21}


Answer: C

Mathematics

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Solve the problem.Find the equation for the tangent plane to the surface    at the point  

A. 7x - 2y + 10z = 29 B. 7x - 2y + 10z = 15 C. 7x + 2y + 20z = 15 D. 7x + 2y + 20z = 29

Mathematics

Find the work done by F over the curve in the direction of increasing t.F = - i + j + k; C: r(t) = i + j  + 5tk, 0 ? t ? 

A. W =  + ?2
B. W =  + ?2
C. W =  + ?2
D. W =  + ?2

Mathematics

State whether the given function is linear and constant, linear but not constant, or nonlinear.f(x) = 

A. linear, but not constant B. linear, constant C. none of these D. nonlinear

Mathematics

Use the unit circle to determine the value of the given expression or state that it is undefined.sec (-90°)

A. 0 B. -1 C. undefined D. 1

Mathematics