given the two vector. vector a(2,1,3) and b(-1,1,2). determine vector c that is perpendicular to bith vector a and vector b hence fund the equation of a olane perpendicular to c and passing through the point(1,1,1)?​

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m

In δabc, m∠acb = 90°, cd ⊥ ab and m∠acd = 45°. find: a find cd, if bc = 3 in