Can you solve 7 to the power of 4, and 4.3 to the power of 3

If 90° < θ < 180° and cotθ = -1/3, then cscθ =

Find a third-degree polynomial equation with rational coefficients that has roots -2 and 6+i

X= 3y - 6 2x - 4y = 8 solve the system of equations using substitution. a) (-12,-2) b) (15,7) c) (21,9) d) (24,10)