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kotegsom [21]
2 years ago
5

What is 74 times 98 add 65?

Mathematics
2 answers:
vitfil [10]2 years ago
6 0

Answer:

7317

Step-by-step explanation:

74x98+65=7317

Tresset [83]2 years ago
5 0

Answer:

7317

Step-by-step explanation:

(74*98)+65=7317

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E2020 preformance task
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Step-by-step explanation:

F2021   preformance task

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3 years ago
Your swimming pool containing 60,000 gal of water has been contaminated by 6 kg of a nontoxic dye that leaves a swimmer's skin a
Paul [167]

[a] Dye is removed from the pool at a rate of

(250 gal/min) * (<em>q</em>/60,000 g/gal) = -<em>q</em>/240 g/gal

where <em>q</em> denotes the amount of dye in the pool at time <em>t</em>. Clean water is pumped back into the pool, so no dye is being re-added.

So the net rate of change of the amount of dye in the pool is given by the differential equation,

\dfrac{\mathrm dq}{\mathrm dt}=-\dfrac{q(t)}{240}

with the intial value, <em>q</em>(0) = 6000 g (or 6 kg).

[b] The ODE above is separable as

\dfrac{\mathrm dq}q=-\dfrac{\mathrm dt}{240}

Integrate both sides to get

\ln|q|=-\dfrac t{240}+C

e^{\ln|q|}=e^{-t/240+C}

\implies q(t)=e^{-t/240+C}=e^{-t/240}e^C=Ce^{-t/240}

Now plug in the initial condition:

6000=Ce^0\implies C=6000

so the particular solution to the IVP is

q(t)=6000e^{-t/240}

[c] The acceptable concentration of the dy is 0.03 g/gal, which in a pool containing 60,000 gal of water corresponds to

(0.03 g/gal) * (60,000 gal) = 1800 g = 1.8 kg

of dye. Find the time <em>t</em> when this occurs:

1800=6000e^{-t/240}\implies0.3=e^{-t/240}

\implies\ln0.3=-\dfrac t{240}

\implies t=-240\ln0.3\approx288.953

so the amount of dye in the pool is within the acceptable tolerance after about 289 min have passes, or about 4.82 hrs. So no, the filtration system is not up to the task.

8 0
3 years ago
Read 2 more answers
There are 2 cubes that are numbered 1 through 6. During a game, both are rolled and the faces landing up are added. How many way
den301095 [7]
I count 5. There could be more. Sorry. Don't have scratch paper at the moment.
7 0
3 years ago
Find the midpoint (3,9),(-1,-5)
maxonik [38]

Answer: i got (1,2)!!

8 0
2 years ago
The equation of a circle is ​ (x−2)2+(y−16)2=169 ​ .
ss7ja [257]
Hello!

The radius is the square root of the number right to the equal sign.

In this case that number is 169.

The square root of 169 is 13.

Hope this helped!
7 0
2 years ago
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