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
Nutka1998 [239]
3 years ago
10

Which formula gives the x-coordinates of the maximum values for y = cos(x)?

Mathematics
1 answer:
REY [17]3 years ago
3 0

Answer with explanation:

The given trigonometric Function is,

     y= cos x

→The maximum value of , cos x , is 1,  at x=0 degree.

Cos x =1

→Cos x = Cos (0)degree,

x=2 k \pi \pm 0

→ for, k= An Integer

x=2 k π→→General formula that  gives the x-coordinates of the maximum values for y = cos(x)

Ordered Pair =(x,y)=(2 k π, 1)

For, any value of , k in the given equation, y will be always 1.

You might be interested in
I am pretty sure I know the answer but I need to be certain. Please answer and give explanation if possible.
creativ13 [48]

Answer:

Vertical opposite angles are the same so the answer is D.

8 0
3 years ago
Do you add or multiple?
BaLLatris [955]
Add your welcome I think
3 0
2 years ago
A regional planner employed by a public university is studying the demographics of nine counties in the eastern region of an Atl
Brilliant_brown [7]

Answer:

Step-by-step explanation:

Hello!

Given the variables:

X₁: Median Age

X₂: Median Income

b) Considering it from a logical point of view, income changes with age, for example, the more experienced the worker is you would think he would get a better paying job than a younger worker who is just starting. Then the dependent variable will be the median income and the independent variable will be the median age.

a)  and c)

To see if there is a linear regression between the median income and median age you have to conduct a hypothesis test for the slope. If the slope is equal to zero, there is no linear regression between the two variables, if it is different to zero, there is a regression between the two of them:

H₀: β=0

H₁: β≠0

α: 0.05

t= \frac{b-\beta }{Sb} ~~t_{n-2}

The estimated regression equation for this regression ^Yi= 20.01 + 0.50X

The standard deviation for the slope is Sb= 0.11

t_{H_0}= \frac{0.50-0}{0.11} = 4.545

And the p-value for the test is 0.0022

The p-value is less than the level of significance I choose, so the decision is to reject the null hypothesis. You can conclude that there is a linear regression between these two variables.

The correlation coefficient between the median income and the median age is r= 0.87 ⇒ This means you could expect a positive and strong linear correlation between the two variables.

d)

The slope represents how much the variable Y is modified whenever the variable X increases one unit.

In this example: Is the modification of the population mean of the median income, when the median age increases one year.

5 0
3 years ago
Mark wants to find the area of a circle with a diameter of 6 cm. Which expressions can he use to find the area of the circle in
ANEK [815]

Answer:

B and C

(I'm not sure if b and e are supposed to be the same though) if they are then, b, c, and e

8 0
3 years ago
Read 2 more answers
What is it eithier A or B?
tatuchka [14]
A is the answer have a nice day
8 0
3 years ago
Read 2 more answers
Other questions:
  • "EXPLAIN PLEASE" Which equation does the graph below represent
    7·1 answer
  • There were 24 cookies in the first batch and an unknown number of cookies in the second batch. If each student in a class of 22
    7·2 answers
  • Combine like terms to create an equivalent expression. 7.4z−5(−1.6z+2.4)
    6·1 answer
  • At a school
    8·2 answers
  • Hi <br> How are you?<br><br> Answer this question for some points + a thanks :)<br> 1218+ 1516=?
    14·2 answers
  • -16 - 3|2x - 5|2 -49
    13·1 answer
  • lin is shopping for a couch with her dad and hears him ask the salesperson how much is your commission the salesperson says that
    15·2 answers
  • Hello! :)
    7·2 answers
  • Joe is making lunch for his crew. Joe took 3 hours to prepare the vegetables. The vegetables were made up of 9 kilograms. How lo
    6·1 answer
  • Some help me plssssss
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!