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
kvv77 [185]
3 years ago
14

Valeria is playing with her accordion. The length of the accordion A(t)A(t)A, left parenthesis, t, right parenthesis (in \text{c

m}cmstart text, c, m, end text) after she starts playing as a function of time ttt (in seconds) can be modeled by a sinusoidal expression of the form a\cdot\cos(b\cdot t)+da⋅cos(b⋅t)+da, dot, cosine, left parenthesis, b, dot, t, right parenthesis, plus, d. At t=0t=0t, equals, 0, when she starts playing, the accordion is 15\text{ cm}15 cm15, start text, space, c, m, end text long, which is the shortest it gets. 1.51.51, point, 5 seconds later the accordion is at its average length of 21\text{ cm}21 cm21, start text, space, c, m, end text. Find A(t)A(t)A, left parenthesis, t, right parenthesis. \textit{t}tstart text, t, end text should be in radians.
Mathematics
1 answer:
ikadub [295]3 years ago
8 0

Answer:

−6cos(  π/3  t)+21

Step-by-step explanation:

You might be interested in
For questions 9 and 11, solve for the remaining angles.
maw [93]

Answer:

‹A = 141°

‹B = 28°

‹C = 11°

*These angles are rounded to the nearest whole*

Step-by-step explanation:

Because you are only given sides you can find an individual angle measures with the inverse law of cosines.

Remember the side opposite of the angle corresponds to that angle.

a² = b² + c² - 2bc cos(A) →

A = cos⁻¹ (a² - b² - c² / -2bc)

b² = a² + c² - 2ac cos(B) →

B = cos⁻¹ (b² - a² - c² / -2ac)

c² = a² + b² - 2ab cos(C) →

C = cos⁻¹ (c² - a² - b² / -2ab)

4 0
2 years ago
What is true about angle ∠APD?
Stolb23 [73]

Answer:

HEY MATE FIRST OF ALL THE QUESTION  IS NOT COMPLETE. TRY MAKING IT MORE CLEAR NEXT TIME !

Step-by-step explanation:

IF THE QUESTION IS THIS IN THE BELOW THEN HERE IS THE ANSWER  .

What is true about angle ∠APD?

It is to angle Angle A P C.

It is to angle Angle C P B.

SOLUTION :

Answer: It is supplementary to angle Angle A P C.

It is vertical to angle Angle C P B.

 I hope this help :)

4 0
2 years ago
Bailey company purchased a new delivery truck for $35,000. the sales tax was $2,000. the logo of the company was painted on the
iragen [17]
To find the cost of the truck, you will need to add all the expenses that incurred in addition to the actual cost of the truck.

35000 + 2000 + 1200 + 120 + 220 = 38540

The cost including expenses should be recorded as $38540.
7 0
3 years ago
When x pounds of force is applied to one end of a lever that is L feet long, the resulting force y on the other end is
nadezda [96]
The question is worded poorly, but it looks like you have a lever in equilibrium, with a force x at a distance d from the fulcrum, and a force y at a distance L - d from the fulcrum. You already have the equilibrium formula for this situation:

xd = y(L - d)

If you know x, y, and d, you can solve for the length L.
3 0
3 years ago
What is 2√20 - 4√45 + 7√12 in simplest radical form? show steps pls
miss Akunina [59]
Exact Form:
8√5+14√3

Decimal Form:
6.36016748

8 0
3 years ago
Other questions:
  • What is Z^6y^3/z^6y^4
    5·1 answer
  • -3(-6b+5)? Solve bih
    14·2 answers
  • Mitchell has decided to give his dog a longer leash to roam in the backyard. If the new 7 ft. leash is tied to the center pole i
    7·1 answer
  • + COLORE
    6·1 answer
  • Please help me I really need help with this Please
    10·1 answer
  • ⚠️Please help ⚠️what is an ratio
    10·1 answer
  • Miranda invited 117 guests to a charity event. Miranda is renting tables that seat 9 guests at each table. If each table costs ​
    12·1 answer
  • A performer expects to sell 5,000 tickets for an upcoming concert. They plan to make a total of $311,000 in sales from these tic
    5·1 answer
  • A company has two manufacturing plants with daily production levels of 8x + 15 items and 3x - 7
    9·1 answer
  • The image of the point (-7, 8) under a translation is (-11, 6). Find the coordinates
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!