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
Elenna [48]
3 years ago
10

Simplify the expression by using a double-angle formula. −2cos2π91

Mathematics
1 answer:
Hatshy [7]3 years ago
7 0
The Answer of <span>−2cos2π91 =</span> is -2 
You might be interested in
What is the sum of the geometric series in which a1 = −5, r = 3, and an = −405?
marysya [2.9K]
An = a1 * r^(n-1)

-405 = -5*3^(n-1)

3^(n-1) = 81

3^4 = 81  so n-1 = 3  and n =  4

Sn  = S4  =  -5 (1 - 3^4)   / ( 1 - 3)   =  400 / -2 = -200 Answer
3 0
3 years ago
Alice has 1/5 as many miniature cars as Sylvester has Sylvester has 35 miniature cars how many miniature cars does alic have?
const2013 [10]
The answer is 7. Since Alice has 1/5 as many cars as Sylvester. You multiply 1/5 by how many cars Sylvester has. Sylvester has 35 cars, so you would do 35 times 1/5 or 35 divided by 5 (multiply by 1/5 and divided by 5 are the same thing) and you would get your answer of 7.
6 0
2 years ago
I WILL GIVE BRAINLIEST!!! PLZ HELP ASAP!!!
Fed [463]

Answer:

C

Step-by-step explanation:

Calculate the distance using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = E(- 2, 2) and (x₂, y₂ ) = F(4, - 6)

EF = \sqrt{(4+2)^2+(-6-2)^2}

    = \sqrt{6^2+(-8)^2}

    = \sqrt{36+64}

    = \sqrt{100} = 10 → C

7 0
2 years ago
Read 2 more answers
What is four fifths more than a number is one third
maks197457 [2]

Answer:

a+4/5=1/3 because + means more than

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
There were 10 cards in a bag labeled 0-9 what is the probability of drawing a 3 and then a 5 if the first card is not replaced b
serg [7]

Answer:

1/9 chance

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • Which pair of monomials has the least common multiple (LCM) of 54x2y3?
    8·2 answers
  • a contractor needs to know the area of a sidewalk that is 2381 feet long and 7 feet wide what is the area of the sidewalk
    6·1 answer
  • Two sides of a rectangular desktop are 3 feet long. The area of the desktop is 15 square feet. What's the perimeter of the deskt
    15·1 answer
  • What is the multiplicative inverse of <br> -7<br> 9
    7·1 answer
  • The cost of a cell phone bill (C) increases when the number of text messages (T) increases. Write the correct equation for this
    6·1 answer
  • Amanda is buying a $190,000 home. She has decided to purchase 2 points in order to lower her interest rate. The appraisal fee is
    11·2 answers
  • How do I solve this algebra two btw
    5·1 answer
  • A study by Consumer Reports showed that 64% of supermarket shoppers believe supermarket brands to be as good as national name br
    10·1 answer
  • Find the zeros of the function.<br> f(x) = 2x2 – 2x – 12
    11·2 answers
  • Answer the question below
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!