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
The formula for the area of a triangle is 1/2bh=A. Which of the following is not a possible first step to rearrange this formula
yarga [219]

We want to put b alone on one side of the equation.

If we multiply by 1/2, we get 1/4bh = A/2. Not only did we not remove a variable from the left side, we made it even more complicated.

So the answer is A.

7 0
3 years ago
The results for a survey of 120 students who were selected randomly are listed below:60 students have a cell phone plan with com
snow_tiger [21]
Your answer should be D, 163, hope this helps! :D
8 0
3 years ago
Read 2 more answers
Some of these are wrong can someone help me please??!?!
stealth61 [152]
Product is the result of two numbers multiplied, and some of your answers are not multiplied
6 0
3 years ago
Read 2 more answers
7) Explain how to divide $53.56 by 10 WITHOUT USING A CALCULATOR
Sophie [7]

Answer: Okay first think back you surely have divided whole numbers by 10 it is the same with decimals for each 0 in the thing you are dividing it by you move the dot one to the left. So if you divide it by 10 it is 5.356 by 100 it would be 0.5356.

Hence the answer is 5.356.

Step-by-step explanation:

Hope it helps

4 0
2 years ago
Graph the equation to solve the system. y=2x+7 1/2y=x+7/2
vlabodo [156]

Given equation is y=2x+7 and \frac{1}{2}y=x+\frac{7}{2}

Let's simplify the 2nd equation \frac{1}{2}y=x+\frac{7}{2} before we can start graph so that calculation will be easy

\frac{1}{2}y=x+\frac{7}{2}

multiply both sides by 2 to cancel out fractions

2*\frac{1}{2}y=2*x+2*\frac{7}{2}

y=2x+7

which is exactly same as the first equatoin so graph of both will be exactly same and solution will be infinitely many solutions.

y=2x+7 has y-intercept 7 so first point will be (0,7). Slope is 2 so rise 2 unit up then 1 right and graph the new point.


3 0
3 years ago
Other questions:
  • The x-coordinate of an ordered pair specifies the
    6·1 answer
  • Are you a NASA engineers President Kennedy's
    7·1 answer
  • A builder planned to build dog houses for his pets .each dog house will be on 1/3 of an acre of land .how much land will he need
    5·1 answer
  • Please help. ASAP!!!
    7·2 answers
  • A gallon of paint will cover 144 square feet of floor space. What are the dimensions of the largest square floor that the gallon
    11·1 answer
  • If f(x) is an even function and f(3)=5 then what is the value of 4f(3)+2f(-3)?
    13·1 answer
  • Please use Distribution
    14·1 answer
  • Find the surface area of the cylinder. Use 3.14 for<br> <img src="https://tex.z-dn.net/?f=%20%5Cpi%20" id="TexFormula1" title="
    12·1 answer
  • Please Help , thank you in advance
    12·2 answers
  • Will give brainliest !!!! Help asap
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!