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
Licemer1 [7]
3 years ago
7

Choose the graph of y = 2 cos x

Mathematics
2 answers:
drek231 [11]3 years ago
5 0
Y = cos x begins at (0,1), descends to (pi/2,0), descends to (pi,-1), ascends to (3pi/2,0), and then ascends to (2pi,1).  This covers only one full period.

The graph of y = 2cost x is the same, except that the amplitudes (y-values) are 2x as great as before:

(0,2), (pi/2, 0), and so on.
Butoxors [25]3 years ago
5 0

Answer:

The graph is in the attachment.

Step-by-step explanation:

The cosine function is periodic. This means that every 2pi, the image is the same.

For y = 2 cos x, the amplitude of the function is given by 2.

The domain of the function is (-∞,∞).

The image of the function is [-2, 2].

<u>For example:</u>

y(0) = 2 cos 0 = 2 . 1 = 2.

y(pi/2) = 2 cos(pi/2) = 2 * 0 = 0.

y(pi) = 2 cos(pi) = 2 * -1 = -2.

y(3pi/2) = 2 cos(3pi/2) = 2 * 0 = 0.

y(2pi) = 2 cos(2pi) = 2 * 1 = 2.

You might be interested in
Paul's Pizzeria sells 45 cheese pizzas and 20 pepperoni pizzas each week.
Zina [86]
Ratio is demonstrated by " : " sign.
Ratio of cheese: pepperoni
45:20
Simplify and divide each side by 5
9:4

A. 9:4

Hope this helps :)
6 0
3 years ago
Step 3: 2x &gt; 10 Step 4: x &gt; 5 What property justifies the work between step 3 and step 4? A. division property of inequali
BigorU [14]

Answer:

A. Division property of inequality.

Step-by-step explanation:

Let be 2\cdot x > 10, we proceed to show the appropriate procedure to step 4:

1) 2\cdot x >10 Given

2) x > 5 Compatibility with multiplication/Existence of multiplicative inverse/Associative property/Modulative property/Result. (Division property of inequality)

In consequence, the division property of inequality which states that:

\forall\, a, b, c \in \mathbb{R}. If c > 0, then:

a> b\,\longrightarrow a\cdot c > b\cdot c \,\lor\, a

But if c < 0, then:

a> b\,\longrightarrow a\cdot c < b\cdot c \,\lor\, a b\cdot c

Hence, correct answer is A.

5 0
3 years ago
Kenya applied for a bank loan. Kenya calculated he would pay $78.00 interest if the rate was 12%. Use the percent equation to fi
Morgarella [4.7K]

78 is 12% of what number

78 is 12% of c 650

8 0
2 years ago
Read 2 more answers
Alexandria purchased a computer on sale. The original price was $1200. The sale price was 5/6 of the original price. how much di
Vaselesa [24]
I believe you ment to say sale price but I hope this helps you understand your question. The original price was 1200, and if it were 5/6 on sale (this method works for all questions like this) you would do 1200 ÷ 6 = 200 x 5 = $1000.
7 0
3 years ago
Latitude and longitude describe locations on the Earth with respect to the equator and prime meridian. The table shows the
Contact [7]

Answer:

Step-by-step explanation:

Given that latitude and longitude describe locations on the Earth with respect to the equator and prime meridian.

Latitude High Temp

("N)  

 

12 53

 

16 41

 

30 67

 

36 63

 

32 70

 

11 58

 

10 61

 

33 67

 

30 72

 

 

Slope 0.732

Int -21.56266667

Regression line is y = 0.732x-21.563 where x represents the latitude and y high temperature

Since slope = 0.732, we get temp increases by 0.8 degree for 1 degree increasenorth in latitude

Hence option c is right

7 0
3 years ago
Read 2 more answers
Other questions:
  • Graph g(x), where f(x) = 2x − 5 and g(x) = f(x + 1).
    11·2 answers
  • Is each expression algebraic or numerical<br> a. 7/2 <br> b. 4m + 6 <br> c. 2(5 - 4)
    10·1 answer
  • How do you solve 2 log x = log 64?
    11·2 answers
  • Two runners are saving money to attend a marathon. The first runner has $112 in savings, received a $45 gift from a friend, and
    13·2 answers
  • Help meh pls!! plsss
    8·2 answers
  • What are the solutions of the quadratic equation (x + 3)2 = 49?
    10·2 answers
  • Use the geometric model to factor x^2-9
    14·1 answer
  • A video camera is priced $299. What will the<br> price of the video camera be after 6% sales tax?
    11·1 answer
  • A baker has determined that four every<br> 4 pounds of flour, she can make 6<br> loaves of bread.
    10·1 answer
  • Help me Plz :))<br> What are the dimensions of AB?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!