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oee [108]
3 years ago
11

What are the answers?

Mathematics
2 answers:
Bond [772]3 years ago
3 0

Answer:c

Step-by-step explanation:

sergejj [24]3 years ago
3 0

Answer:

Step-by-step explanation:

We have the sequence: 50, 54, 58, ....

The sum to n terms is a + (n - 1)d....where a is the first term and d is the difference between terms. Hence, a = 50 and d = 4

so, f(n) = 50 + 4(n - 1) => 4n + 46

Hence, in row 20 we have 4(20) + 46 => 126 seats

:)>

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Find the quotient and remainder for52/8
Burka [1]
The answer 48 with a remainder of 4. Hope this works.
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3 years ago
Set up but do not solve for the appropriate particular solution yp for the differential equation y′′+4y=5xcos(2x) using the Meth
taurus [48]

Answer:

So, solution of  the differential equation is

y(t)=-\frac{5x^2}{4}\cot 2x\cdot \cos  2x+c_1e^{-2it}+c_2e^{2it}\\

Step-by-step explanation:

We have the given differential equation: y′′+4y=5xcos(2x)

We use the Method of Undetermined Coefficients.

We first solve the homogeneous differential equation y′′+4y=0.

y''+4y=0\\\\r^2+4=0\\\\r=\pm2i\\\\

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y_h(t)=c_1e^{-2i t}+c_2e^{2i t}

Now, we finding a particular solution.

y_p(t)=A5x\cos 2x\\\\y'_p(t)=A5\cos 2x-A10x\sin 2x\\\\y''_p(t)=-A20\sin 2x-A20x\cos 2x\\\\\\\implies y''+4y=5x\cos 2x\\\\-A20\sin 2x-A20x\cos 2x+4\cdot A5x\cos 2x=5x\cos 2x\\\\-A20\sin 2x=5x\cos 2x\\\\A=-\frac{x}{4} \cot 2x\\

we get

y_p(t)=A5\cos 2x\\\\y_p(t)=-\frac{5x^2}{4}\cot 2x\cdot \cos  2x\\\\\\y(t)=y_p(t)+y_h(t)\\\\y(t)=-\frac{5x^2}{4}\cot 2x\cdot \cos  2x+c_1e^{-2it}+c_2e^{2it}\\

So, solution of  the differential equation is

y(t)=-\frac{5x^2}{4}\cot 2x\cdot \cos  2x+c_1e^{-2it}+c_2e^{2it}\\

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3 years ago
What is the domain of the function represented in the graph?
alisha [4.7K]

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Step-by-step explanation:

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5 0
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Sveta_85 [38]

Answer:

Step-by-step explanation:

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2 years ago
Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% chance that the land has oil.
inn [45]
P ( A ) = 0.45  - probability that the land has oil,
P ( B ) = 0.8   - probability that the test predicts it
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