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sergejj [24]
4 years ago
8

In a sale, normal prices are reduced by 10%

Mathematics
1 answer:
Free_Kalibri [48]4 years ago
6 0
£54*.1=?
£54-?= ??

I don't know what £ is
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(secx)dy/dx=e^(y+sinx), please help me solve the differential equation. Thanks :)
nalin [4]
First, you must know these formula  d(e^f(x) = f'(x)e^x dx, e^a+b=e^a.e^b, and d(sinx) = cosxdx, secx = 1/ cosx

(secx)dy/dx=e^(y+sinx), implies  <span>dy/dx=cosx .e^(y+sinx), and then 
</span>dy=cosx .e^(y+sinx).dx, integdy=integ(cosx .e^(y+sinx).dx, equivalent of 
integdy=integ(cosx .e^y.e^sinx)dx, integdy=e^y.integ.(cosx e^sinx)dx, but we know that   d(e^sinx) =cosx e^sinx dx,
so integ.d(e^sinx) =integ.cosx e^sinx dx,
and e^sinx + C=integ.cosx e^sinxdx
 finally, integdy=e^y.integ.(cosx e^sinx)dx=e^2. (e^sinx) +C
the answer is 
y = e^2. (e^sinx) +C, you can check this answer to calculate dy/dx
7 0
3 years ago
Read 2 more answers
Suppose a brewery has a filling machine that fills 12 ounce bottles of beer. It is known that the amount of beer poured by this
Lyrx [107]

Answer:

The probability that the bottle contains fewer than 12.38 ounces of beer

P(x < 12.38) = 0.00621

Step-by-step explanation:

This is a normal distribution problem with

Mean = μ = 12.48 ounces

Standard deviation = σ = 0.04 ounces

The probability that the bottle contains fewer than 12.38 ounces of beer

P(x < 12.38)

To solve this, we need to first normalize/standardize 12.38

The standardized score for any value is the value minus the mean then divided by the standard deviation.

z = (x - μ)/σ = (12.38 - 12.48)/0.04 = -2.50

To determine the probability that the bottle contains fewer than 12.38 ounces of beer

P(x < 12.38) = P(z < -2.50)

We'll use data from the normal probability table for these probabilities

P(x < 12.38) = P(z < -2.50) = 0.00621

Hope this Helps!!!

5 0
4 years ago
Read 2 more answers
(4y + 5) + (-7y - 1) <br>a. 3y + 4 <br>b. 3y + 4 <br>c. 11y + 4 <br>d. 3y + 6<br>​
yan [13]

Answer: -3y +4

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Mr. Williams sells vehicles to 20% of the sales lot. if 65 people came to the lot last month,how many vehicles did he sell?
VashaNatasha [74]
13 cars
65x.20=13 is 20percent
6 0
4 years ago
G(x) = 4x-2;<br> Solve if g(x)= 14
lora16 [44]

Answer: x=4

Step-by-step explanation:

14=4x-2

4x=16

x=4

6 0
2 years ago
Read 2 more answers
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