When does a system of matrices have no solution, infinetly many solution, a unique solution. 9x+ky=9 kx+y=-3 find all the values of k such as the system has: no solution one unique solution infinetly many solution

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

The following division is being performed using multiplication by the reciprocal find the missing numbers is 5/12 divided by x/3 equals 5/12 times x/10 equals 1/x

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =