Mixing problems occur quite frequently in chemical industry. we explain here hov. to solve the basic model
involving a single tank. the tank in fig. i) contains 1000 gal of water in which initially 100 ib of salt is dissolvcd.
brine runs in at a rate of 10 gal/min. and each gallon contains 51b of dissoved salt. the mixture in the tank is
kept uniform by ~tirring. brine ['uns our at 10 gal/min. find the amount of salt in the tank at any time t.

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

the multiples of 15 are 15, 30,45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195,   210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 360, 375,   390, 405, 420, 435, 450, 465, 480, 495, 510, 525, 540, 555, 570, 585, 600, 615, 630, 645, 660, 675, 690, 705, 720, and 735.

the factors of 15 are 1, 3, 5, and 15.

hope that , fam!

-une, your fren : )

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2