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2 years ago

If p = 25 what is the value of 40+ p

Mathematics

2 answers:

jonny [76]2 years ago

7 0

65

since p=25
40+25= 65

(plz mark me brainliest is it helped)

denpristay [2]2 years ago

5 0

Answer:

Step-by-step explanation:

40+p; p=25

Simple: subsitute p as 25

40+25=65

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Find the solution of the given initial value problem. ty' + 2y = sin t, y π 2 = 9, t > 0 y(t) =

Helen [10]

For the ODE

$ty'+2y=\sin t$

multiply both sides by t so that the left side can be condensed into the derivative of a product:

$t^2y'+2ty=t\sin t$

$\implies(t^2y)'=t\sin t$

Integrate both sides with respect to t :

$t^2y=\displaystyle\int t\sin t\,\mathrm dt=\sin t-t\cos t+C$

Divide both sides by $t^2$ to solve for y :

$y(t)=\dfrac{\sin t}{t^2}-\dfrac{\cos t}t+\dfrac C{t^2}$

Now use the initial condition to solve for C :

$y\left(\dfrac\pi2\right)=9\implies9=\dfrac{\sin\frac\pi2}{\frac{\pi^2}4}-\dfrac{\cos\frac\pi2}{\frac\pi2}+\dfrac C{\frac{\pi^2}4}$

$\implies9=\dfrac4{\pi^2}(1+C)$

$\implies C=\dfrac{9\pi^2}4-1$

So the particular solution to the IVP is

$y(t)=\dfrac{\sin t}{t^2}-\dfrac{\cos t}t+\dfrac{\frac{9\pi^2}4-1}{t^2}$

$y(t)=\dfrac{4\sin t-4t\cos t+9\pi^2-4}{4t^2}$

6 0

2 years ago

In solving a fraction equation, John added the numerators of several fractions with unlike denominators. What should John have d

telo118 [61]

John should have found a common denominator.

3 0

3 years ago

Read 2 more answers

10) please help I don't understand this question at all

malfutka [58]

We can determine this to be a Geometric Sequence with:

a = 2
r = 1/2
an = ?

We must first find an. We know that an = 1/256, therefore we can use this formula to discover an:

an = a * r^n-1
1/256 = 2 * 1/2^n-1
1/256 / 2 = 1/2^n-1
1/512 = 1/2^n-1
log(1/512) = log(1/2^n-1)
9 = n - 1
10 = n

Therefore, we know an = 10

Now we input it into this equation and solve:

Sn = a(1-r^n/1-r)
Sn = 2(1-1/2^10/1-1/2)
Sn = 2(1023/1024 / 1 / 2)
Sn = 2(1023/1024 * 2 / 1)
Sn = 2(2046/1024)
Sn = 2(1023/512)
Sn = 1023/256
Sn = 3.992

Geez, that took awhile... xD

3 0

2 years ago

Answer not submitted

tensa zangetsu [6.8K]

The customer drawing a 30% discount card then the next customer 20% discount card has a probability of 5/40 for the 30% which = 12.5% and 20% is 15/40 which = 37.5% add them together then divide by 2 for a total of 25%.

The customer drawing a 10% card has a 20/40 which = 50% then a customer drawing a 20% card is 15/40 = 37.5% add them together then divide by 2 = 43.75%

The customer drawing a 10% card has a 20/40 which is 50%. Then another customer drawing another 10% is another 50% add them together and divide by 2 = 50%

The customer drawing a 20% card has a 5/40 which is 12.5% and another customer drawing a 20% card again is 12.5%. Add together and divide by 2 = 12.5%. So your answer is the 1st three.

5 0

3 years ago

Hello can some kind soul help me with this problem please

AlexFokin [52]

Answer: y= -13/25x

Step-by-step:

Using (50,-26) and -13/25

You put it in the equation y=mx+b which would be -26 = -13/25 (50) +b
Then you simplify to find b which would be 0

so the answer would be y = -13/25x

Hope this helps :^

5 0

2 years ago