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
katovenus [111]
2 years ago
5

Find cos 2α; the angle α is in the fourth quadrant, and sin α = -0.45. Which double-angle identity should you use?

Mathematics
1 answer:
mihalych1998 [28]2 years ago
4 0

Answer:

it is the last one

Step-by-step explanation:

me big brain

You might be interested in
Solve for base. 450 crates is 0.90% of ___ crates
Tema [17]
Well... if 450 is 90% of the crates then 500 is 100%. 450 crates is 0.90% of 500 crates.
8 0
3 years ago
Compare and contrast expanding and simplifying algebraic expressions with simplifying numeric expressions. For example, compare
larisa [96]
<span>With algebraic expressions, you can’t add and subtract any terms like you can add and subtract numbers. Terms must be like terms in order to combine them. So, you can’t always simplify an algebraic expression by following the order of operations. You have to use the distributive property to rewrite the expression and then combine like terms to simplify. With numeric expressions, you can either simplify inside the parentheses first or use the distributive property first.</span>
4 0
3 years ago
Read 2 more answers
Are the two events “choosing a sophomore” and “choosing someone who replied ‘Yes’” independent events?
4vir4ik [10]
Yes, they are independent event such that occurring the first event “choosing a sophomore” does not affect the probability of occurring the second event <span>“choosing someone who replied ‘Yes’”</span><span />
5 0
3 years ago
How do I simplify 7x+4-3x+3
yanalaym [24]

Answer:

4x + 7

Step-by-step explanation:

7x+4-3x+3

First put the like terms together

7x+4-3x+3 = (7x - 3x) + (4 + 3)

                  = 4x + 7

7 0
3 years ago
Please help me by showing how to do it
Margaret [11]
20 x 10 = 200 
45 - 10 = 35 - 8 = 27 
8 x 8 = 64
20 - 8 = 22 
22 x 45 = 990
The area of the shape is 990 square feet. 

Hope I could help! 
8 0
2 years ago
Read 2 more answers
Other questions:
  • How do yo<br> u times *fraction
    6·1 answer
  • An HOn2-scale train is a model train that is constructed at the ratio 1 : 87.1. If an HOn2 model of a locomotive is 10.4712 inch
    12·2 answers
  • Person BMI Total Cholesterol
    10·2 answers
  • Charlie is 4 more than twice as old as Frank. Frank is 3 years younger than Bob,
    15·2 answers
  • How do you find the radius when given the volume and height? ​
    9·1 answer
  • I’ll mark brainliest if correct lol
    12·2 answers
  • 219 is what percent of 146?
    9·2 answers
  • Who can solve this anyone
    14·1 answer
  • 12. What is the solution to the equation below*<br> 9 points<br> 5(x – 7) = 20<br> Your answer
    13·1 answer
  • Directions:Simplify the following monomials.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!