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
Anna71 [15]
3 years ago
11

Solve this equation: 2cosx+5=4

Mathematics
2 answers:
erma4kov [3.2K]3 years ago
8 0
\frac{2 \pi }{3}
tangare [24]3 years ago
5 0

Answer:

2pi/3 and 4pi/3

Step-by-step explanation:

Solve for cosine and you will get cosx=-1/2. Using the unit circle find every point where the x value = -1/2 (since cosine is x). You will find that the angles where x = -1/2 are 2pi/3 and 4pi/3

You might be interested in
Mauricio conducted an experiment in which he drew marbles out of the bag and recorded the colors. The results of the experiment
Rzqust [24]
60 to 14 would be the answer I think.

3 0
3 years ago
Read 2 more answers
:
alina1380 [7]

Answer:

60$ will be left

Step-by-step explanation: 30x8 = 240. subtract 300-240 and you get 60

8 0
3 years ago
Read 2 more answers
A pyramid has a volume of 180 cubic inches, a length of 9 inches, and a width of 5 inches.
beks73 [17]
Has a height of 12, because 12*9*5=180
5 0
3 years ago
Determine what type of observational study is described. Explain. Researchers wanted to determine whether there was an associati
34kurt

Answer:

B. The observational study is a cross-sectional study because information is collected at a specific point in time.

Step-by-step explanation:

1) There are three types of Observational Studies: Case-control, cross-sectional and Cohort.

2) Since the researchers collected information from those 1800 adults at a certain time, then we can call it a cross-sectional study. It does not provide solid results since the research was not done over a period to collect further information. We don't know, for example, much more than what that association deeply mean.

3) If we wonder more, then the researchers would have to track those adults over a given period, i.e. a Cohort would be necessary.

4) Moreover, it's not "retrospective" for virtually every question, always makes us look back somehow, and it does not categorize a kind of observational study.

6 0
3 years ago
What is the vertex of the function f(x) = 2+3x+ 3/2
ad-work [718]

Answer:

0=2+3x+3/2

0=7/2+3x

-3x=7/2

divide by -3 on both sides

x=-7/6

hope this helps

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Jolie can read around 14 sentences per minute of her current novel. She wants to finish her reading before the movie comes out n
    8·1 answer
  • Students sold books to the local library as a part of a school drive. paper books were brought for $1.45 each. The library spent
    14·1 answer
  • Use properties of multiplication to show why 4 x 50 = 8 x 25.
    14·1 answer
  • A small bus charges $3.50 per person for a ride from the train station to a concert. The bus will run if at least 3 people take
    9·1 answer
  • A dolphin is at the surface of the ocean. What is the dolphin’s elevation?
    8·1 answer
  • A carnival operator keeps track of the results of a carnival game. To play the game, players try to knock three blocks off of a
    12·1 answer
  • Solve this equation: x+21=20​
    11·2 answers
  • The sun has a radius of 4.32 X 10 5 miles question ( need a answer )
    5·1 answer
  • Factor <br> 4m^2+16m+16. ​
    15·1 answer
  • What is the y-value of point A? On a coordinate plane, point A is 6 units to the right and 1 unit up.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!