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
wlad13 [49]
3 years ago
9

Need help thanks in advance

Mathematics
1 answer:
wolverine [178]3 years ago
3 0

Answer:

Period = pi

Angular frequency = 2

Amplitude = 5

Midline is the line y = 3

Step-by-step explanation:

A sinusoidal wave is written in the general form as:

f(x) = A*cos(w*x) + C

Where:

- A is the amplitude.

- w is the angular frequency, this is equal to 2*pi/T

  where T is the period.

- y = C is the midline.

Then in the equation:

f(x) = 5*cos(2*x) + 3

- 5 is the amplitude.

- 2 is the angular frequency (in the image is called frequency, but this quantity must be in radians/time, while the normal frequency is only in Hz)

- We know that the angular frequency is equal to 2*pi/T, whit this eqation we can find the period:

2 = 2*pi/T

T = 2*pi/2 = pi

pi is the period.

- y = 3 is the midline.

You might be interested in
Solve for all values of x (x+9)2=4
serg [7]

Answer:

x = -7

Step-by-step explanation:

you have to distribute the 2 to what is in the parenthesis, then you get left with 2x+18=4 so subtract the 18 from both sides leaving you with 2x=-14 so you divide both by 2 leaving you with x=-7.

7 0
3 years ago
Read 2 more answers
PLEASE HURRY
faust18 [17]

Step-by-step explanation:

width= w

length = l=w+5

Area = l * w

104 =(w+5) * w

w2 +5w -104 =0

(w+13)(w-8)=0

w=13 and w=8

so width =8

length=13

3 0
2 years ago
Plz help me
Feliz [49]

Answer: the answer is c or d, im not exaclty positive but i want to say the answer is d.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
A school lunch costs $2.50. A monthly lunch pass costs $40.00. Which inequality represents the number x of lunches you must purc
Leya [2.2K]

Answer:

The inequality 2.50x>40.00 represents the number of lunches needed to be purchased for the monthly lunch pass to be a better deal.

Step-by-step explanation:

Given that:

Cost of each lunch = $2.50

Cost of monthly lunch pass = $40.00

Number of lunches = x

For making the monthly pass a better deal, the cost of lunches should be greater than the cost of monthly lunches, therefore

Cost of lunch * Number of lunches > Cost of monthly lunch pass

2.50x > 40.00

Hence,

The inequality 2.50x>40.00 represents the number of lunches needed to be purchased for the monthly lunch pass to be a better deal.

7 0
2 years ago
Read 2 more answers
Can someone help me with these three questions?
N76 [4]

Answer:

1. =

2. <

3. <

Step-by-step explanation:

Note: When comparing decimals you always place both decimals right above each other.

1 is equal to because once you put a 0 behind the 2.1 they are both the same.

2.10

2.1    <add 0 as space holder

2 is less than because they are both negative you are looking for which one is closest to zero.

-4.5   <add 0 as place holder

-4.25   <closest to zero

3 is less than because \pi(pie) equals 3.141592654 which is less than 3.2.

3.141   <do not need to add whole decimal

3.2   <add two 0's as a placeholder

5 0
2 years ago
Other questions:
  • I need 0.0854 to the nearest hundredth. Is 0.08 to the nearest hundredth or is 0.09?
    6·2 answers
  • {-5x+3y less than or equal to 45<br>{2x +3y&gt;24​
    13·2 answers
  • 2/7x+1/2x=−40/7−1/6x please explain step by step
    13·2 answers
  • Simplify: 8^2 + 9(12 / 3*2) -7
    6·1 answer
  • 1,985 + 12,000 + what ? = 14,471 .
    13·2 answers
  • A woman is three times as old as her son 8 years ago, the product of their ages was 112 find their ages​
    12·1 answer
  • Name the desmonstrated property 2+x+y=x+2+y
    8·1 answer
  • A chef got 7 bags of onions. The red onions came in bags of 8 and the yellow onions came in bags of 3. If the chef got a total o
    14·1 answer
  • Please help (no links or I will report you)
    7·1 answer
  • Please help pls pls help pls belp
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!