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
gayaneshka [121]
2 years ago
10

2cos^2x+3cosx-2=0 ...?

Mathematics
1 answer:
VARVARA [1.3K]2 years ago
3 0
Its like a polynomial.
 
cosx=x

so it'll be like

2x^2+3x-2=0

<span>(2x−1)(x+2)
</span>
which makes your life easy because you do not have to solve cos(x)=−2 because it cannot be, so only solve cos(x)=1/2
You might be interested in
A square has an area of approximately 500 square feet. Which of the following would be the most reasonable estimate of the lengt
vlabodo [156]

Answer:

22.36

Step-by-step explanation:

22.36 X 22.36 =(Approx) 500 feet2

8 0
3 years ago
Which situation could be represented by the graph?
Nady [450]
Linear functions parabola mostly things in algebra
4 0
3 years ago
The Florida Everglades welcomes about
Bingel [31]

Answer:

14,000 visitors weekly

Step-by-step explanation:
Break the Equation Down.

10^3 = 10 x 10 x 10

10x10x10=1000 V

Put the 1000 within the problem.

2 x 1000

Solve

2 x 1000 = 2000 Visitors

7 days are within a week so multiply the daily visitors (2000) by 7

2000 x 7 = 14,000


Answer: 14,000 visitors weekly


Hope you like this way of solving! Let me know if have any questions!

3 0
2 years ago
You own a motel and have a pricing structure that encourages rentals of rooms in groups.
zheka24 [161]

Answer:

$41

Step-by-step explanation:

  • One room rents for $68,
  • Two rooms for $65 each,
  • In general, the group rate per room is found by taking $3 off the base of $68 for each extra room.

So,

a_1=\$68\\ \\a_2=\$65\\ \\a_3=\$62\\ \\...

where a_n is the rate per nth room rented.

This is an arithmetic sequence, so

a_n=a_1+(n-1)\cdot d

In your case,

a_1=68\\ \\n=10\\ \\d=-3

Hence

a_{10}=68+(10-1)\cdot (-3)=68-9\cdot 3=68-27=41

This means if a group rents 10 rooms, the charge per room is $41.

5 0
3 years ago
Find the Missing Angles. (1 2 3 and 4)​
kicyunya [14]

Answer:

1=51°

2=18°

3=123°

4=39°

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • Which decimal number best describes the fraction 137/6
    15·2 answers
  • The graph of y=cos⁡x is transformed to y=a cos ⁡(x−c)+d by a vertical compression by a factor of 1/3 and a translation 2 units d
    13·2 answers
  • which statement could be used to explain why f(x) = 2x – 3 has an inverse relation that is a function? a. the graph of f(x) pass
    7·2 answers
  • Which one is it please help
    7·1 answer
  • Sue graphed the formula for converting temperatures from Fahrenheit to Celsius.If the temperature is 50 degrees Fahrenheit, what
    10·2 answers
  • PLEASE ANSWER + BRAINLIEST!!<br><br> Use the quadratic formula to solve.<br><br> 3x^2 = 5x
    15·1 answer
  • Name at least 3 angles for each diagram
    14·2 answers
  • Z= 8i – 172<br> Re(z) =<br> Im(z)
    6·1 answer
  • How many centimeters are equivalent<br> to 2.5 meters?
    11·2 answers
  • Please help answer number 12
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!