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
Tanzania [10]
2 years ago
7

If cosx=-3/7, find the value for cos4x

Mathematics
1 answer:
charle [14.2K]2 years ago
6 0

Answer:

cos ( 4 x ) = - 479 / 2401

Step-by-step explanation:

:D

You might be interested in
Algebra help needed. I appreciate it!
Anna11 [10]
\cfrac{3y-z}{y+5z}  \\\\= \cfrac{3*6-2}{6+5*2} \\\\= \cfrac{18-2}{6+10} \\\\= \cfrac{16}{16} \\\\= 1
7 0
3 years ago
Read 2 more answers
Please can I check with you the answer for nbr 12?<br> Is it correct?
Crank

Answer:

B and C

Step-by-step explanation:

  • B = 2,4,6
  • =3,6
  • C= 2,4,6,8,10,12
  • = 6,12
8 0
2 years ago
The first term of an arithmetic sequence is-3 and the 15 term is 53. What is the common difference of the sequence?
Annette [7]
a_2=a_1+d
a_3=a_2+d=a_1+2d
a_4=a_3+d=a_1+3d
...
a_{15}=a_1+14d

Since a_1=-3 and a_{15}=53, the common difference d is

53=-3+14d\implies d=4
6 0
2 years ago
Find the value of X ​
creativ13 [48]

Answer:

B X equals 3

Step-by-step explanation:

e3quals 3

4 0
2 years ago
A manufacturer of stereo sound speakers has found that the revenue received from selling the speakers at a price of p dollars ea
Alenkasestr [34]

Answer:

-4p^2 + 420p  = (-16+ 60 = 44p)+ (420p) =464p the revenue is 7.73 x $60

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Write the number as an improperios fraction, 10 3/4
    12·1 answer
  • A set of data items is normally distributed with a mean of 240 and a standard deviation of 32. Convert 272 to a? z-score
    15·1 answer
  • A cube has eight congruent faces.<br> true<br> false
    5·1 answer
  • What is the greatest common factor for 2x2<br> , 8x5<br> , 4x7
    7·1 answer
  • a car salesman makes $445 per week plus commission. if during the week he sells a new van for $34,960 and earns 2.5% commission
    15·2 answers
  • Solve for h<br> Give an exact answer.<br> 3h=7( 2/7− 3/7 h)−10
    14·1 answer
  • (Giving brainliest to the person who has the correct answer) Don’t mind my homework help que. Can i have some help on these too
    9·2 answers
  • What is 4(x 2) = 48 simplified?
    5·1 answer
  • 3. Use congruent triangles to find side lengths.
    7·1 answer
  • The length of a beige is 500 miles if 1 inch represent 25 miles what is the length of the bridge ?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!