Find all solutions to the equation. cos x = - 1/2

Answers

Answer 1

Answer:

[tex]x = 2\pi /3 + 2\pi n\\x= 4\pi /3 + 2\pi n[/tex]

Step-by-step explanation:

Radian: x = 2\pi /3 + 2\pi n\\x= 4\pi /3 + 2\pi n

Degree:  x = 120 + 360n , x = 240 + 360n


Related Questions

0.62 devided by 3 please

Answers

Answer:

0.206 and then it repeats 6 over and over again

Step-by-step explanation:

hope it helped :)

Answer:

hey there!

Step-by-step explanation:

the answer is:

0.20666666666

hope it helped and have a nice day!

Solve for x.

−3x + 2b > 8

Answers

Answer:

x<2/3b+-8/3

Step-by-step explanation:

Let's solve for x.

−3x+2b>8

Step 1: Add -2b to both sides.

2b−3x+−2b>8+−2b

−3x>−2b+8

Step 2: Divide both sides by -3.

-3x/-3>-2b+8/-3

x<2/3b+-8/3

Answer is : x<2/3b+-8/3

Apply the Distributive Property and simplify.
- 8(x + 3) = 24
- 8x +
= 24

Answers

Answer:

x=-6

Step-by-step explanation:

-8(x+3)=24 first, divide both sides to get x+3=-3

then move the constant to the right and change its sign to get x=-3-3 and calculate to get your answer.

hope this helps!

A triangle has a base of 16" in height of 1/8 inch what is the area?

Answers

Answer:

Area of triangle is 1 inches²

Step-by-step explanation:

We are given:

Base of triangle = 16 inches

Height of triangle = [tex]\frac{1}{8} \:[/tex] inches

We need to find:

Area of triangle

The formula used to find Area of triangle is:

[tex]Area \:of\: triangle=\frac{1}{2}\times b \times h[/tex]

where b is base and h is height.

Putting values and finding area:

[tex]Area \:of\: triangle=\frac{1}{2}\times 16 \times \frac{1}{8}\\ Area \:of\: triangle=\frac{16}{16}\\ Area \:of\: triangle=1\:inches^2[/tex]

So,  Area of triangle is 1 inches²

Two of the steps in the derivation of the quadratic formula are shown below.
Step 6: = b^2-4ac/4a^2= ( x+b/2a )^2
Step 7: = +✔️b^2-4ac/2a= x + b/2a
Which operation is performed in the derivation of the quadratic formula moving from Step 6 to Step 7?
subtracting b/2a from both sides of the equation squaring both sides of the equation taking the square root of both sides of the equation taking the square root of the discriminant ​

Answers

Answer:

taking the square root of both sides of the equation

Step-by-step explanation:

The operation which is performed in the derivation of the quadratic formula moving from Step 6 to Step 7 is taking the square root of both sides of the equation.

What are Quadratic Equations?

Quadratic equations are polynomial equations of second degree.

The general form of a quadratic equation is ax² + b x + c = 0.

Given two steps in deriving the quadratic formula which is used to find the roots of a quadratic equation.

The first step is,

step 6 : (b² - 4ac) / (4a)² = (x + b / 2a)²

step 7 : ± √(b² - 4ac) / 2a = x + b / 2a

We have to find which step is done in between to transform from step 6 to step 7.

It is clear that square root is taken.

When the square root is taken in step 6,

±√[(b² - 4ac) / (4a)²] = √[(x + b / 2a)²]

√(b² - 4ac) / √(4a)² = √(x + b / 2a)²

± √(b² - 4ac) / 2a = x + b / 2a

Hence the step performed is taking the square root on both sides.

Learn more about Quadratic Formula here :

https://brainly.com/question/9300679

#SPJ7


Suppose that the functions r and s are defined for all real numbers x as follows.

Answers

Answer:

a)  ( r+ s) (x)  = 3 x + 9

b)   ( r . s ) (x) =  2 x² + 13 x +20

c) ( r- s) (x)  = -1 -x

Step-by-step explanation:

Step(i):-

Given that r(x) = x +4 and s(x) =  2x + 5

a)   ( r+ s) (x)  = r(x) + s(x)

                    = x +4 + 2x +5

                   = 3 x + 9

    ( r+ s) (x)  = 3 x + 9

b)

    ( r . s ) (x)  = r(x) . s(x)

                    = (x+4) . ( 2x +5)

                   = x ( 2x +5) + 4( 2x +5)

                  = 2 x² + 5 x + 8 x +20

                 = 2 x² + 13 x +20

( r . s ) (x) =  2 x² + 13 x +20

c)

 ( r- s) (x)  = r(x) - s(x)

               =  (x+4 - ( 2x +5)

              = x +4 - 2x -5

            = -x -1

( r- s) (x)  = -1 -x

     

I rlly need this now, show work pls :((

Answers

Answer:

1. y=-x-3 2.y=1/3x-4

Step-by-step explanation:

1. 3x+3y=-9

3y=-3x-9

y=-x-3

2. x-3y=12

-3y=-x+12

y=1/3x-4

3,500 divided by what =70

Answers

Answer:

50

Step-by-step explanation:

Answer:

50

Step-by-step explanation:

3500 ÷ 70 = 50

3500 ÷ 50 = 70

PLEASE SOMEONE HELP ME WITH MY HOMEWORK ILL GIVE BRAINLIST TO WHOEVER GETS THIS RIGHT

Answers

Answer:

First one is sin 27 and cos 63

second one is sin 60

Step-by-step explanation:

4x50=??? use a calculator only if you need to!

Answers

Answer:

so if you know what

4 x 5 is you can just add a 0 to the end

so 4 x 5 = 20

o now add a 0

the awnser is 200!!

Step-by-step explanation:

5x -3x + 19 = 2x - 10​

Answers

answer :
5x - 3x + 19 = 2x - 10
5x - 3x = 2x - 29
5x - 3x - 2x = -29
0 = -29
doesn’t work

Answer: x = 7.25

Explanation:

Point A is located at (8, 7) and Point B is located at (0, 5) find the midpoint of line segment overline AB .

Answers

Answer:

The midpoint of the line segment   D = ( 4, 6)  

Step-by-step explanation:

Explanation:-

Given points are A(8,7) and B(0,5)

The midpoint of line segment overline AB

Let 'D' be the midpoint of AB

[tex]D= (\frac{x_{1} + x_{2} }{2} , \frac{y_{1} +y_{2} }{2} )[/tex]

[tex]D = (\frac{8+0}{2} , \frac{7+5}{2} )[/tex]

[tex]D = (\frac{8}{2} , \frac{12}{2} )[/tex]

The midpoint of the line segment

 D = ( 4, 6)  

Corresponding angles are
A. Complementary
B.Equal
C. Supplementary

Answers

Answer:

equal

Step-by-step explanation:

When the two lines are parallel Corresponding Angles are equal

I need help on this question

Answers

I think the answer is 16

0.002 inches
0.202 inches
0.022 inches
0.02 inches
Which of the following shows these amounts in order from LEAST to GREATEST?

Answers

Answer:

0.0202

0.022

0.02

0.002

Step-by-step explanation: I am 5 million iq brainlist pls

3.) (1.012 X10-2) + (2.4X10-4)

Answers

Answer:

=(10.12-2)+(24-4)

=8.12+20

=28.12

Factor the polynomial:
462 + 15b - 4

Answers

Answer:

15([tex]\frac{458}{15}[/tex]+b) or

15(b+[tex]\frac{458}{15}[/tex])

Step-by-step explanation:

First we can subtract the 4.

458 + 15b

Now we need to find the GCF, but they do not share any kinds of factors together. This might look ugly, but it is what it is. We factor out 15 to get b by itself.

15([tex]\frac{458}{15}[/tex]+b) or

15(b+[tex]\frac{458}{15}[/tex])

Felix chooses a game piece from a bag. This table gives the number of game pieces of each color in the bag. what is the probability that Felix will choose a blue or green piece? Please help me
A. 1/3 | B. 1/4 | C. 1/6 | D.1/2
Color {}{}{}{}{} Number of pieces
______________________
Blue = 2
Green = 2
Red = 3
Yellow = 5

Answers

Add the colors together to get total pieces:

2 + 2 + 3 + 5 = 12 total pieces.

Blue and green = 2 + 2 = 4 pieces.

Picking blue of green would be 4/12 which reduces to 1/3

The answer is A. 1/3

How do I do this please hurry!!!!!!

Answers

Answer:

put a closed dot on -10. then draw a right arrow from -10 to 11

Step-by-step explanation:

Answer:

See below.

Step-by-step explanation:

Whenever the sign is greater than, the line needs to go to the right. Moreover, when it also is equal to, the dot must be shaded. The dot also needs to be on -10 in this instance.

In short, shaded dot on -10 going to the right.

(GIVING BRAINLIEST!!)

Choose the equation that represents the fraction one eighth

A) 7 ÷ 8 = ________
B) 1 ÷ 8 = ________
C) 8 ÷ 7 = ________
D) 8 ÷ 1 = ________

Answers

Answer:

Step-by-step explanation:

The answer is d

Answer:

B.

Step-by-step explanation:

I did the test and got it right.

In the following equation y = 2x + 3, what value represents the growth?
Group of answer choices

Answers

Answer:

isn't it 2x?

Step-by-step explanation:

Factor the expression: 4d - 4
How do u do this plz help

Answers

Answer: 4(d - 1)

Step-by-step explanation:

both terms in 4d - 4 have a common factor: 4. pull this 4 out of both factors in order to get 4(d - 1)

There are 100 performers in a dance recital. The ratio of men to women is 4 : 6. How many performers in the dance recital were men?

Answers

Answer:

40 men

Step-by-step explanation:

100 performers so the total men and women = 100

4 + 6 = 10

100/10 = 10

so 4(10) = 40

Determine whether or not the following graph represents two quantities that are proportional to each other. Explain your reasoning.

Answers

Answer:

The quantities are not proportional.

Step-by-step explanation:

The values, x and y, do not begin or pass through the origin, (0,0). This means they are not proportional.

The graph represents two quantities are not proportional to each other.

What is Proportional?

A relationship is proportional if each pair of data values are related in the same way, by multiplying by a factor. You can recognize a proportional relationship by looking at data, an equation, or a graph.

Given:

As, A relationship is proportionate if its graph is a line or ray that passes through the origin.

and, It is not proportionate if the line or ray does not go through the origin. Additionally, if anything is not linear, it is not proportional.

Here the graph also does not pass through the origin.

Hence, the graph is not proportional.

Learn more about Proportional here:

https://brainly.com/question/7096655

#SPJ2

A speed skater skates 1.5 km in 78 s. What is her speed in km/h? Round to the nearest

Answers

Answer:

Step-by-step explanation:

Speed=Distance/Time

1.5/78=0.01923076923

Answer rounded=0.02/0.019

What three pairs of numbers have 5 as there greatest common factor?

Answers

Answer:

10 and 15, 20 and 25, and 35 and 45.

Step-by-step explanation:

if Leah makes $9.50 per hour and she works 36 hours this week, how much will her paycheck be before taxes?

Answers

Answer:

Leah makes $342 before tax.

Step-by-step explanation:

9.50 x 36 = 342

Leah makes $342 before tax.

I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!

Answer:

Leah makes $342 before tax.

Step-by-step explanation:

9.50 x 36 = 342

Leah makes $342 before tax.

I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!

Step-by-step explanation:

What is M - 3 > -2???

Answers

Answer:

m>1

Step-by-step explanation:

inverse operations... add 3 to both sides so you get -2+3=1!!

What does "solution" mean?
What does it mean for a point to be a solution to a linear
equation?
For example, if I say, " (2,5) is a solution to the
equation y = 2x + 3," how could you check my claim?

Answers

Answer:

A solution to a linear equation means that the ordered pair is a point that lies on that line.

If someone were to say (2,5) is a solution to the equation y= 2x+3, you could check them by plugging in 2 where the variable "x" and seeing if y =5.

In this case,

y= 2(2)+3

y=7

(2,5) is not a solution.

Last year a pet groomer trim the nails of 865 cat and 1189 dogs if she charged $9 for pet how much money did she earn

Answers

Answer:

18486$

Step-by-step explanation:

Other Questions
Solve this system of equations.3x + 4y = 36y=-2 +8 Five friends share 6 small bags of popcorn. If they share the popcorn equally, how many bags of popcorn does each friend receive?Complete the division equation and find the quotient. Let p represent the number of bags of popcorn each friend receives.Enter the correct answers in the boxes.HintD:FPbags Simplify 32 35. (4 points)Question 3 options:1) 372) 3103) 974) 910 Plz do and Ill give brainliest Identify the correct property of equality to solve each equation.x6 = 5 In a right triangle, if a = 8in and c = 14in, what is b? Round to three decimal places. Which expression is equivalent to (7x3)2(x3)? Help Combine terms Which organelle/cell part is responsible for detoxing the cell. It is a network of sac and channels that transport lipids and stores ions/proteins. Do you think wolves are a keystone species? Explain your answer whats the answer to this question pls help Marissa got 60% of the questions right on her quiz out of 40 total questions.How many questions did she get worng Who were some of the Founding Fathers who wrote the Declaration ofIndependence? Which property is shown here?4 + (5 + 3a) = (4 + 5) + 3aO Distributive PropertyO Associative Property of AdditionO Commutative Property of MultiplicationO Commutative Property of AdditionO Associative Property of Multiplication> Next Question What new complication is introduced in this passage?Capulet expects Juliet to marry Paris but does not know that she is already married to Romeo.Juliet will not be able to marry Paris because she is in mourning for Tybalt.Capulet wants Paris to avenge Tybalts death.Capulet and his wife are fighting over Juliets marriage. What is the answer ??????????????? 12foot 11incher+11foot 3 incher (Dont answer if you dont want alot of notifs)If Logx (1 / 8) = - 3 / 2, then x is equal toA. - 4B. 4C. 1 / 4D. 10 In the triangle below,x= [ ? ]. Round to the nearesttenth. 2. How does the setting of Scene 1 help you understand Della's problem? in the gift of the magi