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3 years ago

Please Hellppppppp!!!!

Mathematics

2 answers:

zubka84 [21]3 years ago

8 0

Answer:

d, e, f would be the answer but wait for someone to double check me

vagabundo [1.1K]3 years ago

3 0

Answer:

yes it's d,. e,. f.

sorry if it is wrkbg

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Find Integrating Fector: ylogy dx + ( x-logy )dy=0

12345 [234]

Rewrite the ODE as

$y\log y\,\mathrm dx+(x-\log y)\,\mathrm dy=0\iff y\log y\dfrac{\mathrm dx}{\mathrm dy}+x=\log y$
$\dfrac{\mathrm dx}{\mathrm dy}=\dfrac1{y\log y}x=\dfrac1y$

so that it is now linear in $x$ . An integrating factor would

$\mu(y)=\exp\left(\displaystyle\int\frac{\mathrm dy}{y\log y}\right)=e^{\log(\log y)}=\log y$

Multiply both sides by $\mu(y)$ to get

$\log y\dfrac{\mathrm dx}{\mathrm dy}=\dfrac1yx=\dfrac{\log y}y$
$\dfrac{\mathrm d}{\mathrm dy}[x\log y]=\dfrac{\log y}y$
$x\log y=\displaystyle\int\frac{\log y}y\,\mathrm dy$
$x\log y=\dfrac12\log^2y+C$
$x=\dfrac12\log y+\dfrac C{\log y}$

4 0

3 years ago

-13.11-8.67-18.1f=-16.1f+.22 solve for X

Serga [27]

Solve for f:
-22=2f, so f=-11.

5 0

3 years ago

Help me 5th grade HW

HACTEHA [7]

That would just be 5 inches

3 0

4 years ago

Read 2 more answers

Here is part of a timetable for the Paris to Montpellier express train service.

evablogger [386]

Answer:

772.8 km

Step-by-step explanation:

Speed is the rate of change of distance. Speed is the ratio of distance travelled to time taken. Average speed is the ratio of the total distance travelled to the total time taken, it is given by:

Average speed = Total distance / total time

The 20 07 train leaves Paris at 20:07 and reaches Montpellier at 23:34. This means that the total time taken is 3 hours 27 minutes, that is 3.45 hours.

Given that average speed is 224 km/h, hence:

Average speed = total distance / total time

224 km/h = total distance / 3.45 h

total distance = 224 * 3.45 = 772.8 km

3 0

3 years ago

If a worker makes $425.00 per week, what is the gross amount they'll earn if they work every week for the year?

Free_Kalibri [48]

Answer 
$22,100

Explanation 
The first thing you have to find how many weeks are there in one year.
Taking a year to have 365 days and a week to have 7 days, then;
1 year = 365÷7=52 complete weeks.
A worker make $425.00 per week.
For 52 weeks = $425.00×52=$22,100

6 0

4 years ago