Mathematics, 01.10.2019 19:30 rozzy5132
Initially 5 grams of salt are dissolved into 10 liters of water. brine with concentration of salt 5 grams per liter is added at a rate of 3 liters per minute. the tank is well mixed and drained at 3 liters per minute. let xbe the amount of salt, in grams, in the solution after t minutes have elapsed. find a formula for the rate of change in the amount of salt, dx/dt, in terms of the amount of salt in the solution x. dxdt=equation editorequation editorgrams/minutefind a formula for the amount of salt, in grams, after tminutes have elapsed. x(t)=equation editorequation editorgramshow long must the process continue until there are exactly 20 grams of salt in the tank?
Answers: 1
Mathematics, 21.06.2019 22:20
1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.
Answers: 2
Mathematics, 21.06.2019 23:00
According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.
Answers: 1
Initially 5 grams of salt are dissolved into 10 liters of water. brine with concentration of salt 5...
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