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
Mekhanik [1.2K]
3 years ago
10

Solve 2sin ^2x-sin x-1=0

Mathematics
1 answer:
tia_tia [17]3 years ago
4 0
Consider, pls, the suggested solution.

Answer:
\left[\begin{array}{ccc}x=(-1)^{n+1}* \frac{ \pi}{6} + \pi n\\ \ x= \frac{ \pi}{2} +2 \pi n\end{array}

You might be interested in
Please help me- its hard-
snow_tiger [21]

Answer:

$18,495

Step-by-step explanation:

The wholesale cost to the dealership is 100% of $13,500.

Then the dealership adds 37% of $13,500.

100% + 37% = 137% = 1.37

The retail price of the car is 1.37 times the wholesale price.

$13,500 × 1.37 = $18,495

3 0
2 years ago
Read 2 more answers
Pleas help urgent !! <br> send me a answer with an explanation please !
Liula [17]
Just add both sides. If one of them if 15 the other side is 15 .
4 0
2 years ago
The distance between two cities is 325.65 km. About how far apart are they to the nearest kilometer?
Bogdan [553]
5 and up, raise it up
4 and below, keep it low!
Raise it up to 326km
6 0
3 years ago
Read 2 more answers
Help please asap!!!
lys-0071 [83]

Answer:

69

Step-by-step explanation:

12+12+16+14+15

3 0
3 years ago
PLEASE SOLVE THIS PROBLEM ​
schepotkina [342]

Answer:

18) Area= 5*5/2=25/2=12.5 unit ^2

19) Area=AB^2V3/4=8a^2*V3/4=2V3a^2

Step-by-step explanation:

18. A(-3,0)

B(1,-3)

C(4,1)

AB=V(-3-1)^2+(0+3)^2=V16+9=V25=5

AC=V(-3-4)^2+(0-1)^2=V49+1=V50=5V2

BC=V(1-4)^2+(-3-1)^2=V9+16=V25=5

so AB=BC=5

and AC^2=AB^2+BC^2

so trg ABC is an isosceles right  angle triangle (<B=90)

Area= 5*5/2=25/2=12.5 unit ^2

19. A(a,a)

B(-a,-a)

C(-V3a, V3a)

AB=V(a+a)^2+(a+a)^2=V4a^2+4a^2=V8a^2

AC=V(a+V3a)^2+(a-V3)^2=Va^2+2a^2V3+3a^2+a^2-2a^2V3+3a^2=V8a^2

BC=V(-a+V3a)^2+(-a-V3a)^2=V8a^2

so AB=AC=BC

Area=AB^2V3/4=8a^2*V3/4=2V3a^2

7 0
3 years ago
Other questions:
  • (8a^-9)-4/3 in simplest form
    5·2 answers
  • Andre wants to buy a bike that has a price tag of $125. If the bike is discounted 20%, how much will Andre pay (before tax)
    10·2 answers
  • Use synthetic division and the remainder theorem to find p(–3) if p(x) = x4 + 19x3 + 108x2 + 236x + 176
    10·1 answer
  • For problems 1 and 2, determine if the given coordinate pair is a solution to the system of inequalities.
    6·1 answer
  • 12 more than 8,2 times a number n
    5·1 answer
  • A polling company reported that 5959​% of 10181018 surveyed adults said that secondhand smoke issecondhand smoke is "quite annoy
    10·1 answer
  • 80 books to 64 books percent of change
    5·2 answers
  • An electrician charges $15 plus $11 per hour. Another electrician charges $10 plus $15 per hour. Which of the systems of equatio
    6·1 answer
  • what is 4 7/10 × 1/2 plz help me I don't know it please im thankful to whoever help me thank you so much ​
    15·2 answers
  • #1 A computer programmer worked for 10 hours and earned $70, which is a rate of $ per hour. Rate Unit Rate
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!