All categories

3 years ago

How many times does 749 go into 7?

Mathematics

2 answers:

spin [16.1K]3 years ago

7 0

It doesn't go into 7 at all

Temka [501]3 years ago

4 0

749 does not go into 7 at all.

You might be interested in

if There are 24 students in me hunts class if of the student are girls what is the ratio of boys to girls in his class

Iteru [2.4K]

Answer:

24:0

Step-by-step explanation:

since all the students are girls so boys are nill

6 0

3 years ago

A 1000-liter (L) tank contains 500 L of water with a salt concentration of 10 g/L. Water with a salt concentration of 50 g/L flo

djverab [1.8K]

Answer:

a) $y(t)=50000-49990e^{\frac{-2t}{25}}$

b) $31690.7 g/L$

Step-by-step explanation:

By definition, we have that the change rate of salt in the tank is $\frac{dy}{dt}=R_{i}-R_{o}$ , where $R_{i}$ is the rate of salt entering and $R_{o}$ is the rate of salt going outside.

Then we have, $R_{i}=80\frac{L}{min}*50\frac{g}{L}=4000\frac{g}{min}$ , and

$R_{o}=40\frac{L}{min}*\frac{y}{500} \frac{g}{L}=\frac{2y}{25}\frac{g}{min}$

So we obtain. $\frac{dy}{dt}=4000-\frac{2y}{25}$ , then

$\frac{dy}{dt}+\frac{2y}{25}=4000$ , and using the integrating factor $e^{\int {\frac{2}{25}} \, dt=e^{\frac{2t}{25}$ , therefore $(\frac{dy }{dt}+\frac{2y}{25}}=4000)e^{\frac{2t}{25}$ , we get $\frac{d}{dt}(y*e^{\frac{2t}{25}})= 4000 e^{\frac{2t}{25}$ , after integrating both sides $y*e^{\frac{2t}{25}}= 50000 e^{\frac{2t}{25}}+C$ , therefore $y(t)= 50000 +Ce^{\frac{-2t}{25}}$ , to find $C$ we know that the tank initially contains a salt concentration of 10 g/L, that means the initial conditions $y(0)=10$ , so $10= 50000+Ce^{\frac{-0*2}{25}}$

$10=50000+C\\C=10-50000=-49990$

Finally we can write an expression for the amount of salt in the tank at any time t, it is $y(t)=50000-49990e^{\frac{-2t}{25}}$

b) The tank will overflow due Rin>Rout, at a rate of $80 L/min-40L/min=40L/min$ , due we have 500 L to overflow $\frac{500L}{40L/min} =\frac{25}{2} min=t$ , so we can evualuate the expression of a) $y(25/2)=50000-49990e^{\frac{-2}{25}\frac{25}{2}}=50000-49990e^{-1}=31690.7$ , is the salt concentration when the tank overflows

4 0

4 years ago

Richard had his car repaired at a body shop.

Alisiya [41]

Answer:

2 hours

Step-by-step explanation:

308-100=208

208÷52=2

6 0

4 years ago

How is a rational number that is not an integer different from a rational number that is an integer?

pogonyaev

Rational that is an integer can be whole numbers and negative whole numbers
But, rationals include ALL fractions, which although includes all rational numbers, but includes other members like 1/2, 1/3 and so on

8 0

3 years ago

Read 2 more answers

13. Represent (–6)3 using repeated multiplication.<br><br> Best answer gets brainliest! 20 points!

mestny [16]

Answer:

-6 x -6 x -6

Step-by-step explanation:

because 6^3 is 6x6x6

5 0

4 years ago

Read 2 more answers