Please solve this and explain with step
I'll give you BRAINIEST !!
2x+4=−(x−3)+9

The probability that a tutor will see 0, 1, 2, 3, or 4 students is given below determine the probability distribution's missing value.

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi, r^3 , where r is the sphere’s radius.

Point q is equidistant from the sides of ∠tsr. find m∠rst.