A400-gal tank initially contains 100 gal of brine contain-ing50lbofsalt. brinecontaining 1lbofsaltpergallon enters the tank at the rate of 5 gal=s, and the well-mixed brine in the tank flows out at the rate of 3 gal=s. how much salt will the tank contain when it is full of brin?

Find the value of the variable and the length of each secant segment

Taking algebra two apex courses and need with these questions

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?