15. a tank initially contains 50 galions of water with a concentration of 2 lb/gal salt. water that is 3 lb/gal salt enters the tank at a rate of 5 gal/min, and the well-stirred mixture is allowed to leave the tank at a rate of 2 gal/min. if q(t) denotes the amount of salt in the tank at time t, determine an initial value problem that can be used to model this scenario. then, find the solution.

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

69.64%

step-by-step explanation:

60

step-by-step explanation:

every triangle measures a total of 120 degrees. you have to find angle c. we know that isosceles triangles angles are equal. 60 degrees plus 60 degrees gives you 120.

the weight of the object inside the box!