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
-Dominant- [34]
3 years ago
14

Find all the solutions to the equation 7sin^2x -14sinx+2=-5

Mathematics
1 answer:
Allisa [31]3 years ago
7 0
I will get you started.

Let sin x = u

Then 7sin^2x -14sinx+2=-5 become

7u^2 - 14u = - 5

7u^2 - 14u + 5 = 0

Steps:

1. Solve for u.

2. Back- substitute for u.

3. Take the arcsin on both sides to find the angle(s).

You finish.
You might be interested in
How can I figure out this math problem: Stanley ran a 5 kilometer race in 30 minutes. What was his speed in kilometers per hour?
stiv31 [10]
Since the question is asking for the time units to be in hours, you want to convert 30 minutes to an hour; 0.5

We’re able to use the basic motion formula for velocity to work out this question.

Velocity = distance / time
Velocity = 5 / 0.5
Velocity = 10km/h

Therefore, Stanley’s average speed was 10 kilometres per hour. :)
3 0
2 years ago
Sofia measures the length of her car as 16 feet. What is the greatest possible error? ______ feet What is the margin of error? _
Genrish500 [490]

Answer:

Sofia measures the length of her car as 16 feet.

What is the greatest possible error?  

<h2> ⇒ 0.5 feet </h2>

What is the margin of error?  

<h2> ⇒ 15.5  TO  ⇒ 16.5 feet</h2>

Step-by-step explanation:


3 0
3 years ago
Solve.
Nat2105 [25]

The solution to the algebraic equation, −0.4x − 3.1 = 5.9, is:<u> x = -22.5</u>

Given the algebraic equation, −0.4x−3.1 = 5.9, to solve for x, follow the steps below:

−0.4x − 3.1 = 5.9

  • Add 3.1 to both sides

−0.4x − 3.1 + 3.1 = 5.9 + 3.1

-0.4x = 9

  • Divide both sides by -0.4

-0.4x/-0.4 = 9/-0.4

x = -22.5

Therefore, the solution to the algebraic equation, −0.4x − 3.1 = 5.9, is:<u> x = -22.5</u>

<u></u>

<u></u>

Learn more here:

brainly.com/question/16864747

7 0
2 years ago
Factor c^2 −64. Is this a special product?<br> PLS HELP
laila [671]
C^2-64 is a square roots factoring one. you take the square root of c^2 which is c and then the square root of 64 which is 8 or -8 so the answer is (c-8)(c+8). and it is a special product
8 0
2 years ago
PLEASE HELP!!!!!Find the equation of each line and then put each equation into the form Ax+By=C where A,B, and C are integers
shutvik [7]

Answer:

y-5x-7=0

Step-by-step explanation:

m = -2-3/1-2

m=5

y-y1 = m(x-x1)

y-2=5(x+3)

y-2=5x +5

y-5x-7=0

4 0
3 years ago
Other questions:
  • Jason is considering taking out a 20-year loan with monthly payments of $140 at an APR of 5.1%, compounded monthly, and this equ
    13·2 answers
  • 3+6X(5+4)÷3-7 someone pls help me
    13·1 answer
  • AP calculus HW Need help on #61
    5·1 answer
  • It takes 3 1/2 hours to travel 1/3 of the way across the United States on an airplane. How long will it take to travel across th
    9·2 answers
  • What is (-2x)+5+3x-4x+(-1)+(-x) simplified
    10·1 answer
  • PLEASE HELP FAST Its in the photo below
    7·1 answer
  • Write the equation of the line in y=Mx+b form with a slope of -1/4 passing through the point (-2,6).
    10·1 answer
  • PLEASE HELP OR I WILL GET IN TROUBLE
    13·2 answers
  • At a movie theater, the price of 2 adult tickets and 4 child tickets is $48. The price of 5 adult tickets and 2 child tickets is
    9·1 answer
  • Please help! And please explain how you did it!
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!