5x+5y+2z=1
x+3y+7z=-12
5x-7y-3z=-52

solve using a matrix with caramers rule

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?