1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gekata [30.6K]
3 years ago
6

(1 point) Write the given second order equation as its equivalent system of first order equations. u′′+6.5u′−1.5u=8sin(3t),u(1)=

−3,u′(1)=−1.5 Use v to represent the "velocity function", i.e. v=u′(t). Use u and v for the two functions, rather than u(t) and v(t). (The latter confuses webwork. Functions like sin(t) are OK.)
Mathematics
1 answer:
Over [174]3 years ago
6 0

Answer:

v' + 6.5\cdot v = 1.5\cdot u + 8\cdot \sin 3t

Step-by-step explanation:

The differential equation is:

v' + 6.5 \cdot v -1.5\cdot u = 8 \cdot \sin 3t

v' + 6.5\cdot v = 1.5\cdot u + 8\cdot \sin 3t

You might be interested in
Can someone please explain this to me
Gre4nikov [31]

What's happening is that every subtraction can be written as "addition of the opposite."

18-5 = 18 + (-5)

One reason this is done in the work you showed is that they're trying to show why you distribute the negative and the 1 into the parentheses, why you multiply everything in the parentheses by "-1" and not just 1.

The other reason is to later to be able to move the individual terms around, so you'll be able to combine like terms.

When you move terms around, the sign has to stay attached to the term, so writing all the subtractions as addition helps keep the sign attached.

8 0
3 years ago
Mai is given these two systems of linear equations to solve:
Sholpan [36]

Answer:

Step-by-step explanation:

System 1 has no solution, and System 2 has infinitely many solutions. Wait, YOUR IN HIGH SCHOOL?! IM IN 8TH GRADE AND IM DOING THIS??!! well, idk how to solve this, but these are the answers.

6 0
3 years ago
Are the ratios 18:6 and 3:1 equivalent?
garik1379 [7]

Answer: no

Step-by-step explanation: here are all the ratios equivalent to 18:6 18 : 636 : 1254 : 1872 : 2490 : 30108 : 36126 : 42144 : 48162 : 54180 : 60198 : 66216 : 72234 : 78252 : 84270 : 90288 : 96306 : 102324 : 108342 : 114360 : 120378 : 126396 : 132414 : 138432 : 144450 : 150468 : 156486 : 162504 : 168522 : 174540 : 180558 : 186576 : 192594 : 198612 : 204630 : 210648 : 216666 : 222684 : 228702 : 234720 : 240738 : 246756 : 252774 : 258792 : 264810 : 270828 : 276846 : 282864 : 288882 : 294900 : 300918 : 306936 : 312954 : 318972 : 324990 : 3301008 : 3361026 : 3421044 : 3481062 : 3541080 : 3601098 : 3661116 : 3721134 : 3781152 : 3841170 : 3901188 : 3961206 : 4021224 : 4081242 : 4141260 : 4201278 : 4261296 : 4321314 : 4381332 : 4441350 : 4501368 : 4561386 : 4621404 : 4681422 : 4741440 : 4801458 : 4861476 : 4921494 : 4981512 : 5041530 : 5101548 : 5161566 : 5221584 : 5281602 : 5341620 : 5401638 : 5461656 : 5521674 : 5581692 : 5641710 : 5701728 : 5761746 : 5821764 : 5881782 : 5941800 : 600

https://goodcalculators.com/ratio-calculator/

© 2015-2021 goodcalculators.com

3 0
2 years ago
Read 2 more answers
Help with #7 please I don’t understand
quester [9]

Answer:

A

Step-by-step explanation:

(2x^2 + 3x - 4) (x + 4)


FOIL.


2x^2 times x = 2x^3

3x times x is 3x^2

-4 times x = -4x

2x^2 times 4 = 8x^2

3x times 4 = 12 x

-4 times 4 = -16


Combine like terms to get 2x^3 + 11x^2 + 8x - 16.

4 0
3 years ago
Read 2 more answers
Please ignore this. It was a mistake.
Rina8888 [55]

Answer:

#ignores

Step-by-step explanation:

#letsallignore

7 0
2 years ago
Read 2 more answers
Other questions:
  • Solve for x. 10 = − 2/3 x A) −6 B) −9 C) −15 D) −18
    9·2 answers
  • (-x^2-x+3)+(-x-1) simplify
    12·2 answers
  • At a benefit​ concert, seven bands have volunteered to perform but there is only enough time for five of the bands to play. How
    12·1 answer
  • I need help due by the end of today
    6·1 answer
  • HELP ME IM SO CONFUSED IT HAS TO BE SIX SUMTHIN RIGHT??
    13·2 answers
  • Amy has 2 1/2 kilograms of grapes on the scale at the grocery store. She then puts an additional 50 grams of grapes on the scale
    8·2 answers
  • Convert 32/5 to a mixed number.
    5·2 answers
  • Which function's graph has a y-intercept of 2?
    6·1 answer
  • Translate A number plus 17 is 25​
    7·1 answer
  • 1st Generation is 1 person
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!