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3 years ago

A. 40, B.80, C.120, D. 160, or E. 400

Mathematics

2 answers:

SpyIntel [72]3 years ago

8 0

ιт ιѕ 80

υиℓιкє ωιтн αяєα ωнєяє υ мυℓтιρℓу ℓєиgтн тιмєѕ ωι∂тн

ωιтн ρєяιмєтєя уσυ ʝυѕт α∂∂ тнєм

Rudik [331]3 years ago

6 0

B: 80

All the sides add up to 20 so adding all four sides make 80

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Answer:

So, solution of the differential equation is

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Step-by-step explanation:

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

We use the Method of Undetermined Coefficients.

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we get

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

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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2 years ago

Otero translated the phrase "three less than a number" into the expression 3 minus x. Which best describes the accuracy of Otero

fomenos

Correct Question:

Otero translated the phrase "three less than a number" into the expression 3 minus x. Which best describes the accuracy of Otero's expression?.

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b. It is inaccurate. Three is being subtracted from a number, so X-3 is what he should have written.

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Answer:

The answer is B because three less than a number means that a 3 is less than some number X meaning three is being subtracted from X. So equation should be X-3 rather than 3-X.

Step-by-step explanation:

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3 years ago

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sorry if that didnt help

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3 years ago