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gladu [14]
3 years ago
13

Solve: y" + 14y' + 49y = 8xe^-7x

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
8 0
The answer is 7x^2e-/8

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(02.06 LC)
marta [7]
Correct answer is B


25 characters
3 0
3 years ago
Read 2 more answers
In the aftermath of a car accident, it is concluded that one driver slowed to a halt in 20 seconds while skidding 1775 feet. If
-Dominant- [34]
Assume uniformly accelerated motion

Vf = Vo - at => a= [Vo - Vf] / t

Vf = 0, t = 20 s => a = Vo / 20

x = Vot - at^2 / 2

x = Vot - (Vo / 20) * t^2 /2

x = 1775 feet * [1 mile / 5280 feet] = 0.336 mile

t = 20 s

=> 0.336 = 20Vo - Vo(20)^2 /(40) = 20Vo - 10 Vo = 10 Vo

=> Vo = 0.336 /10 = 0.0336 mile /s

Vo = 0.0336 mile/s * 3600 s/h = 120.96 mile / h

Therefore, the car was way over the speed limit.



7 0
3 years ago
The diagram below represents the back of a doghouse. If the perimeter of the doghouse is 445, what is the value of x?
beks73 [17]

Answer:isisisisisjwjsusjsnss

Step-by-step explanation:

4 0
3 years ago
Reuben drove 268 miles using 12 gallons of gas. At this rate, how many miles would he drive using 9 gallons of gas?
Sav [38]

This question calls for ratios. Reuben drove 268 miles with 12 gallons. 268 divided by 12 is 22\frac{1}{3}, so he can drive 22 and one third of a mile with one gallon. Multiply that by 9 and you will get 201 miles, which is how much he can drive using 9 gallons of gas

4 0
3 years ago
What is the solution of 3(2x - 1) - 2(3x + 4) = 11x?
Eduardwww [97]

3(2x - 1) - 2(3x + 4) = 11x

  • Distribute 3 inside the parentheses.

6x - 3 - 2(3x + 4) = 11x

  • Distribute 2 inside the parentheses.

6x - 3 - 6x - 8 = 11x

  • Combine like terms.

-11 = 11x

  • Divide both sides by 11.
<h3>x = -1</h3>
6 0
3 years ago
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