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Otrada [13]
3 years ago
10

Add. Simplify your answer. 2/11 + 6/11

Mathematics
2 answers:
Margaret [11]3 years ago
5 0
The answer is probably like 8/11
wel3 years ago
4 0
Okay the denominator stays the same. Add across the top 2+6= 8 . so put 8 over 11 and you can't simplify it is at its lowest term. 8/11
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Solve the quadratic equation (x-3)2 = 49
Tresset [83]
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3 0
3 years ago
A tank contains 3,000 L of brine with 15 kg of dissolved salt. Pure water enters the tank at a rate of 30 L/min. The solution is
Shalnov [3]

Answer:

Step-by-step explanation:

Volume of tank is 3000L.

Mass of salt is 15kg

Input rate of water is 30L/min

dV/dt=30L/min

Let y(t) be the amount of salt at any time

Then,

dy/dt = input rate - output rate.

The input rate is zero since only water is added and not salt solution

Now, output rate.

Concentrate on of the salt in the tank at any time (t) is given as

Since it holds initially holds 3000L of brine then the mass to volume rate is y(t)/3000

dy/dt= dV/dt × dM/dV

dy/dt=30×y/3000

dy/dt=y/100

Applying variable separation to solve the ODE

1/y dy=0.01dt

Integrate both side

∫ 1/y dy = ∫ 0.01dt

In(y)= 0.01t + A, .A is constant

Take exponential of both side

y=exp(0.01t+A)

y=exp(0.01t)exp(A)

exp(A) is another constant let say C

y(t)=Cexp(0.01t)

The initial condition given

At t=0 y=15kg

15=Cexp(0)

Therefore, C=15

Then, the solution becomes

y(t) = 15exp(0.01t)

At any time that is the mass.

5 0
3 years ago
Sharon is working her way through school. She works two part-time jobs for a total of 22 hours a week. Job A pays $5.90 per hour
slavikrds [6]
The answer is 11


Hope this helps :D
8 0
3 years ago
(2a+b)^2 simplest form
creativ13 [48]
2^2a^2+b^2
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3 0
3 years ago
Combine like terms. y + 7 + 4(y + 3) =
bearhunter [10]

Answer:

5y+19

Step-by-step explanation:

should be the answer

8 0
2 years ago
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