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3 years ago

Someone please help me

Mathematics

1 answer:

Stels [109]3 years ago

6 0

Answer:first one .

Step-by-step explanation:

n/a

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Solve the differential equation. y' + 5xey = 0.

Gwar [14]

Answer:

The solution is $y = - ln(\frac{5}{2}x^{2} + C)$

Step-by-step explanation:

To solve the differential equation, we will find $y$

From the given equation, y' + 5xey = 0.

That is, $y' + 5xe^{y} = 0$

This can be written as

$\frac{dy}{dx} + 5xe^{y} = 0$

Then,

$\frac{dy}{dx} = - 5xe^{y}$

$\frac{dy}{e^{y}} = - 5x dx$

Then, we integrate both sides

$\int {\frac{dy}{e^{y}}} =\int {- 5x dx}$

$\int {e^{-y}dy }} =\int {- 5x dx}$

Then,

$-e^{-y} = -\frac{5}{2}x^{2} + C$

$e^{-y} = \frac{5}{2}x^{2} + C$

Then,

$ln(e^{-y}) = ln(\frac{5}{2}x^{2} + C)$

Then,

$-y = ln(\frac{5}{2}x^{2} + C)$

Hence,

$y = - ln(\frac{5}{2}x^{2} + C)$

8 0

3 years ago

Will upvote please help

Fynjy0 [20]

T = 12 min, T o = 80° C, T s = 50 °C, T ( 12 ) = 60° C
60 = 50 + ( 80 - 50 ) · e^(-12k)
10 = 30 · e^(-12k)
e^(-12k) = 0.3333...
ln ( 0.333.. ) = - 12 k
- 12 k = - 1.1
k = ( - 1.1 ) : ( - 12 ) = 0.0916
Answer: D ) 0.0916

4 0

3 years ago

Please Help!! Asap!!

Brilliant_brown [7]

Answer:

A because it's most likely to be like that at tryouts

4 0

3 years ago

-6/5<br> A. irrational<br> B. rational<br> C. integer<br> D. natural

GrogVix [38]

Answer:

B. Rational

Step-by-step explanation:

Any number which can be represented as a ratio in the form of a fraction is a rational number.

4 0

3 years ago

Yenni is playing a card game where she is trying to collect on of each suit.There are 3 hearts 2 diamonds 1 spade and 4 clubs le

Gemiola [76]

Answer:

27/40

Step-by-step explanation:

Probability of picking heart: 3 hearts/ 10 total

Probability of picking club: 4 clubs/ 9 left over cards

3/10 divided by 4/9= 27/40

Hope this helped

Please mark Brainliest

So i can rank up

8 0

3 years ago