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
solong [7]
3 years ago
11

Which of the expressions (on the photo document I inserted) together represent all solutions to the following equation?

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
7 0

Answer:

x =15 + 30n

Step-by-step explanation:

8cos(12x)+4=-4

Subtract 4 from each side

8cos(12x)+4-4=-4-4

8cos(12x)=-8

Divide by 8

8/8cos(12x)=-8/8

cos(12x) = -1

Take the arccos on each side

arccos(cos(12x)) = arccos(-1)

12x = 180 degrees  

But we can go around in a circle of 360 and get the same result

12 x = 180+360n  where n is an integer

Divide each side by 12

x = 180/12 +360n/12

x =15 + 30n

You might be interested in
Sally can paint a room in 4 hours while it takes steve 5 hours to paint the same room. How long would it take them to paint the
sdas [7]

Answer:

I think it's 20/9 hours. so 2.222222... hours.

Step-by-step explanation:

8 0
2 years ago
Kars
8090 [49]

vaka laka vakanlaka vaka laka

6 0
3 years ago
A percent is a fraction whose denominator is 100.<br><br> Always<br><br> Sometimes<br><br> Never
madreJ [45]
It's sometimes, because let's say I have 4/5 right? So when in a percent it's 80%. I suppose you could turn it into a a decimal of 80/100 but no not always. 3295729357/1000000000000. That doesn't have a denominator of 100, so yeah.
6 0
3 years ago
Read 2 more answers
Find the unit rate:<br><br> $1.32 for 12 ounces<br><br> plz help
iren2701 [21]

Answer:

<h2>$0.11 per ounce</h2>

Step-by-step explanation:

$1.32/12oz = x/1oz

Cross Multiply.

1.32 = 12x

Divide both side by 12.

1.32/12 = x

Convert to decimal.

$0.11 for 1 ounce

3 0
2 years ago
Reggie pick 3 3/4 quarts of blueberries and 4 1/3 quarts of raspberries at a fruit farm about how many total quarts of berries d
KonstantinChe [14]
About 8 quarts of berries
7 0
3 years ago
Other questions:
  • The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 91 inches, and a standard d
    9·1 answer
  • One should continue to monitor his or her goals and adjust his or her plan for achieving them when it is necessary A:true B:fals
    12·2 answers
  • R value of <br> X=10, 11, 12, 13, 14 y=10, 12, 16, 17, 18<br> What would be the value of x
    8·1 answer
  • Slope intercept form ​
    13·2 answers
  • Seven times a number is 5600. what is the number?
    12·2 answers
  • 5 - 3(6 - 2y)
    15·2 answers
  • How do i solve -3x-5=10
    11·1 answer
  • Please, does anyone know?
    15·1 answer
  • 6x + 7 = 13 + 7x pls solve this for me
    11·2 answers
  • May someone please help me? I'm too lazy.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!