What is the exact value of sin
(7pie/12)

Answers

Answer 1

Answer:

[tex]\displaystyle \frac{\sqrt{2} + \sqrt{6}}{4}[/tex]

Explanation:

If you recall the unit circle [from the polar graph], you would have no trouble at all figuring this out, but sinse you have trouble, do not worry about it. So, here is what you should have realised:

[tex]\displaystyle \boxed{\frac{\pi}{2}} = \frac{6}{12}\pi[/tex]

If you did not notise, [tex]\displaystyle \frac{7}{12}\pi[/tex]is just [tex]\displaystyle \frac{\pi}{12}[/tex]more than [tex]\displaystyle \frac{\pi}{2},[/tex]which means the exact value could possibly have a 4 in its denominatour [which obviously also has a desimal value] or could be irrational [values that cannot be written as fractions]. In this case, according to the unit circle, you will have a fraction, and that will be this:

[tex]\displaystyle \frac{\sqrt{2} + \sqrt{6}}{4}[/tex]

It is all about memorisation of the unit circle, which I know is difficult, but you will get used to it soon.

*Now, if you had to find [tex]\displaystyle cos\:\frac{7}{12}\pi,[/tex]then the exact value would be the OPPOCITE of the exact value of [tex]\displaystyle sin\:\frac{7}{12}\pi,[/tex]which is [tex]\displaystyle -\frac{\sqrt{2} + \sqrt{6}}{4},[/tex]because you would be crossing into the second quadrant where the x-coordinates are negative, accourding to both the cartesian and polar graphs.

I am joyous to assist you at any time.

What Is The Exact Value Of Sin(7pie/12)

Related Questions

The graph below shows the relationship between test grades and shoe sizes of the students in Dexter's class.


A:positive linear association
B:Negative linear association
C:Nonlinear association
D:No association

Answers

The scatterplot can show an association or no association, at all.

The type of association shown by the graph that relates test grades and shoe sizes of the students in Dexter's class is no association

How to determine the association?

When the points on the graph of the scatter plot follows an approximately, straight line; then the relationship is a linear relationship.

If it follows a curve, then it is a nonlinear relationship

If the points are scattered, then it shows no association.

The points on the graph are scattered, and they do not follow a specific pattern.

Hence, the graph shows no association

Read more about scatterplots at:

brainly.com/question/6592115

Answer:

Girl... your answer is

A) Students who studied more tended to score higher.

Thank You very much :)

I just need the answers to 3.) and 6.) please show your work if you want brainlyist


Find the area of 3.) and 6.)

Answers

Answer:

3)  48 units²

6)  46 units²

Step-by-step explanation:

Question 3

This shape is a parallelogram with base of 8 units and height of 6 units.

Area of a parallelogram = base × height

                                        = 8 × 6

                                        = 48 units²

Question 6

This shape is a quadrilateral.  It is made up of 3 triangles and a rectangle (see attached image for how to divide the quadrilateral)

Area of rectangle = width × length

                              = 4 × 6

                              = 24 units²

Area of a triangle = 1/2 × base × height

Triangle 1:   1/2 × 2 × 4 = 4 units²

Triangle 2:   1/2 × 6 × 2 = 6 units²

Triangle 3:   1/2 × 4 × 6 = 12 units²

Total area = 24 + 4 + 6 + 12 = 46 units²

180 days of school, grace was absent 15%, what percent was grace absent

Answers

Answer:

27 days

Step-by-step explanation:

15% of 180 = 27

The answer is 21
15/100 x 180


Which polynomial identity will prove that 49
= (2 + 5)2?

Answers

Step-by-step explanation:

error

Polynomial error: You have used illegal character ( = )..

Step by Step Solution

More Icon

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

49-((2+5)*2)=0

STEP

1

:

Equations which are never true:

1.1 Solve : 35 = 0

This equation has no solution.

A a non-zero constant never equals zero.

No solutions found

HELP PLEASE
What is the volume of the composite figure

Answers

find volume of both figures with formula V=b•h•l
the bigger one is V=8•5•3. this value is 120
the smaller one is V=3•3•3. this value is 27
you then add the two answers and get your final answer of 147 m^3

find the measure of arc ABD

Answers

Answer: 245 degrees

Step-by-step explanation:

When finding the margin of error for the mean of a normally distributed population from a sample, what is Alpha, assuming a confidence level of 74%? 0. 13 0. 26 0. 74 0. 87.

Answers

The value of alpha is 0.26, assuming a confidence level of 74%.

What is the margin of error?

The significance level α is the probability of making the wrong decision when the null hypothesis is true.

Alpha levels which is also called as significance levels are used in hypothesis tests.

Given

When finding the margin of error for the mean of a normally distributed population from a sample.

The confidence interval = 74% = 0.74.

The value of the alpha is given by;

[tex]\rm \alpha =1- Confidence \ interval[/tex]

Substitute all the values in the formula

[tex]\rm \alpha =1- Confidence \ interval\\\\\alpha=1-0.74\\\\\alpha=0.26[/tex]

Hence, the value of alpha is 0.26, assuming a confidence level of 74%.

To know more about confidence interval click the link given below.

https://brainly.com/question/26725727

A computer screen has a width of 15 inches and a height of 11 inches. Approximately what is the length of the screen’s diagonal?

Answers

Answer:

18.6 inches

Step-by-step explanation:

simple

Isoke is solving the quadratic equation by completing the square. 10x2 40x-13=0 10x2 40x=13 A(x2 4x)=13 What is the value of A? -13 4 10 40.

Answers

The value of A in solving the considered quadratic equation by completing the squares method is given by: Option

What is completing the squares method for solving the quadratic method?

Suppose the considered quadratic equation is of the form [tex]ax^2 + bx + c = 0[/tex]

Then, completing the squares method tries to make a squared term in terms of x in the left side, so that x comes in linear form, instead of quadratic, as shown below:

[tex]ax^2 + bx + c = 0\\ax^2 + bx = -c\\\\\text{Multiplying 4a on both the sides}\\4a^2x^2 + 4abx = -4ac\\\\\text{Adding }b^2\text{ on both the sides}\\4a^2x^2 + 4abx + b^2 = b^2 -4ac\\or\\(2ax +b)^2 = b^2 - 4ac\\2ax + b = \pm \sqrt{b^2 - 4ac}\\\\x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}[/tex]

This provides two solution to the considered quadratic equation. These solutions can be real, or imaginary.

For the considered case, the quadratic equation is:

[tex]10x^2 + 40x - 13 = 0[/tex]

Applying the method as Isoke did, we get:

[tex]10x^2 + 40x - 13 = 0\\10x^2 + 40x = 13\\10(x^2 + 4x) = 13[/tex]

Therefore, we get the value of A as 10.

Learn more about completing the squares here:

https://brainly.com/question/9339524

Answer:

C

Step-by-step explanation:

edge 2022

DBA flvs geometry module 7

Does anyone know what kind of they are going to ask??

Answers

Answer:

im not sure, but i go to the same school! If you want practice questions go to your teachers home page then click module 7 then click "DBA" it has questions and reviews!

Step-by-step explanation:

go to the hope page and look for your module!

Brian has reduced his cholesterol level by 8% after his last check up. If his original level was 180, what is his approximate cholesterol level now?

Answers

Answer:

Hello

Step-by-step explanation:

The answer would be 165

Hope this helps

Two sides of a triangle have the following measures. Find the range of possible measures for the third side.

6, 13

Answers

Answer:

x=14.3

Step-by-step explanation:

its the Pythagorean theorem

What is the surface area of a sphere with radius 3?
O A. 367 units2
O B. 1877 units
O C. 37 units2
O D. 91 units2

Answers

The surface area is 113 but since that’s not an option I’m assuming you need the answer in terms of pi which would be 37

The solution is, SA =36π unit² is the surface area of the sphere which is correct answer Option(A).

What is surface area of the sphere?

We know that, The formula for the surface area of a sphere of radius

R is 4πR².

here, we have,

According to question, we have the radius of sphere as 3 units.

So, surface area of a sphere

⇒4πR²

⇒4π(3)²

⇒36π

The surface area of a sphere is given by

SA = 4 pi r^2

SA = 4 * pi * 3^2

SA =36 pi

SA =113.10

Hence, the surface area of the sphere is 36π unit².

Learn more about  surface area of a sphere here:

brainly.com/question/14692728

#SPJ7

just help because like this is a assignment for 7th grade math and if i flunk it im leaving highschool so like yeah

Answers

Answer:

Lucas's table is proportionate

Step-by-step explanation:

if you divide each number of page (for Lucas) by the time you will get a scale factor of 19. whereas the scale factor for Brianna's table is all over the place(she doesn't have a definite scale factor)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

​ 1/2 (29−x)=7.75 solve for x
urgent

Answers

Hi x = 13.5 hope it helps!

[tex] \frac{1}{2} (29 - x) = 7.75[/tex]

[tex] \frac{1}{2} ( - x + 29) = 7.75[/tex]

[tex] \frac{1( - x + 29)}{2} = 7.75[/tex]

[tex] \frac{ - x + 29}{2} = 7.75[/tex]

[tex]2· \frac{ - x + 29}{2} = 2·7.75[/tex]

[tex] - x + 29 = 2·7.75[/tex]

[tex] - x + 29 = 15.5[/tex]

[tex] - x + 29 = 15.5 - 29[/tex]

[tex] - x = - 13.5[/tex]

[tex] \frac{ - x} {- 1} = \frac{ - 13.5 }{ - 1 } [/tex]

[tex]x = 13.5[/tex]

So, the value of x is 13.5.


A company manufactures and sells video games. A survey of video game stores indicated that at a price of $88 each, the demand
would be 200 games, and at a price of $38 each, the demand would be 1,200 games. If a linear relationship between price and
demand exists, which of the following equations models the price-demand relationship?
(Let x represent the price per video game and y represent the demand.)
A
y = 20x- 1,560
В.
y = 20x
C.
y = -20x + 1,960
D.
y = -20x + 1,560

Answers

The price-demand relationship of the company is a linear model

The equation that models the price-demand relationship is y = -20x + 1960

How to determine the linear relationship?

From the question, we have the following points:

(x, y) = (88, 200) and (38, 1200)

The equation of the linear relationship is then calculated as:

[tex]y = \frac{y_2 - y_1}{x_2 -x_1} * (x - x_1) + y_1[/tex]

Substitute known values in the above equation

[tex]y = \frac{1200 - 200}{38 -88} * (x - 88) + 200[/tex]

Evaluate the difference

[tex]y = \frac{1000}{-50} * (x - 88) + 200[/tex]

Evaluate the quotient

[tex]y = -20 * (x - 88) + 200[/tex]

Expand

[tex]y = -20x + 1760 + 200[/tex]

Evaluate the sum

[tex]y = -20x + 1960[/tex]

Hence, the equation that models the price-demand relationship is y = -20x + 1960

Read more about linear relationships at:

https://brainly.com/question/14323743

4/6 X + 10/4 =-6/8x-10

Answers

Given :

[tex]\: {\qquad \sf \dfrac{4}{6} x + \dfrac{10}{4} = - \dfrac{6}{8}x - 10 }[/tex]

To Find :

The value of x.

Solution :

[tex] {\qquad \sf \dashrightarrow \: \dfrac{4}{6} x + \dfrac{10}{4} = - \dfrac{6}{8}x - 10 }[/tex]

Subtracting [tex] \sf \: \dfrac{10}{4} [/tex] from both sides :

[tex] {\qquad \sf \dashrightarrow \: \dfrac{4}{6} x \: \: \cancel{+ \dfrac{10}{4}} \: \: \cancel{- \dfrac{10}{4}} = - \dfrac{6}{8}x - 10 - \dfrac{10}{4} }[/tex]

Adding [tex] \sf \dfrac{6}{8} x[/tex] to both sides :

[tex]{\qquad \sf \dashrightarrow \: \dfrac{4}{6} x + \dfrac{6}{8}x = \cancel{- \dfrac{6}{8}x } \: \: \cancel {+ \: \dfrac{6}{8}x} - 10 - \dfrac{10}{4} }[/tex]

[tex]{\qquad \sf \dashrightarrow \dfrac{4}{6} x + \dfrac{6}{8}x = - 10 - \dfrac{10}{4}}[/tex]

Adding the like terms :

[tex]{\qquad \sf \dashrightarrow \dfrac{32x + 36x}{24} = \dfrac{ - 40 - 10}{4} }[/tex]

[tex]{\qquad \sf \dashrightarrow \dfrac{68x}{24} = \dfrac{ - 50}{4} }[/tex]

[tex]{\qquad \sf \dashrightarrow \dfrac{34x}{12} = \dfrac{ - 25}{2} }[/tex]

By doing cross multiplication we get :

[tex]{\qquad \sf \dashrightarrow {68x} = - 300 }[/tex]

[tex]{\qquad \sf \dashrightarrow {x} = \dfrac{ - 300}{68} }[/tex]

[tex]{\qquad \bf \dashrightarrow {x} = \dfrac{ - 75}{17} }[/tex]

At an animal shelter, there are 15 dogs and 12 cats.
What percent of the number of cats is the number of
dogs?

Answers

Answer:

Dogs: 44.44 Cats: 55.556

Step-by-step explanation:

*this is only if you are allowed to use a calculator*

1. You have to add the total of the cats and dogs

Why? Here, let me put it this way. You have a test with two sections: math and science. If there are 2 Maths Questions and 2 Science questions, what percent of the test are math questions? You would not say 2/2 and say 100. You would say 2/4 because it is obvious. You do the same in this case but it is not as noticeable because you are dealing with bigger numbers.

15 + 12 = 27.

2. Solve

a. There are 15 dogs and 12 cats that makes up 27 pets total.

So you have to do 12/27 for cats,

15/27 for dogs. The fractions equal one and It shows you how much of one is there compared to the total.

b. Simplify

You can simplify these fractions:

for 12/27, divide the numerator and the denominator by 3.

You get 4/9

Divide 15/27 for dogs by 3 as well to get 5/9.

5+4 is 9, which means that I am doing the math correctly.

According to the calculator, 5/9 is 55.556, and 4/9 is 44.444

They should be accurate because there are more dogs than cats and the percentage for dogs are higher. Hence, this is correct.

Cats = 4/9 = 44.444%

Dogs = 5/9 = 55.556%

Hope this helps :)

-jp524

Use the graph of the polynomial function to find the factored form of the
related polynomial. Assume it has no constant factor.

Answers

Answer:

Option B

Step-by-step explanation:

→ It cannot have a bx coefficient in ax² + bx + c which eliminates all but 1 option

Answer:

  B.  (x +4)(x -4)

Step-by-step explanation:

The x-intercepts are shown on the graph to be at x=-4 and x=4. For x-intercept p, there is a factor (x-p). That means the factored form is ...

  (x -(-4))(x -(4)) = (x +4)(x -4)

_____

Additional comment

The product of these factors is x^2 -16, consistent with the vertex on the graph being located at (0, -16).

i need help please!!!!

Answers

Step-by-step explanation:

I solved it by steps...

I hope you understand...

are these quadrilaterals​

Answers

Answer:

yes

Step-by-step explanation:

as you can see if you count them they are

Answer:

The shape on the very left of the picture is not a quadrilateral. However, the three other shapes are quadrilaterals.

Step-by-step explanation:

A shape is a quadrilateral if it has four sides and four angles. The shape on the left has five sides and five angles, therefore, not a quadrilateral.

80.5 rounded to the nearest tenth

Answers

Answer:

It will still be 80.5

Step-by-step explanation:

The 8 is in the TENS place, the 0 is in the ONES place and the 5 is in the TENTHS place. There is no number in the hundredths ace so you have to anex a 0, 0 means the number stays the same; so the answer is 80.5

it will remain as 80.5 :)

John has a loyalty card good for a discount at his local pharmacy. The item he wants to buy is priced at $34, before discount and tax. After the discount, and before tax, the price is $33.32. Find the percent discount.

Answers

Answer:

2%

Step-by-step explanation:

(100 × (33.32 / 34 - 1)

Round to the nearest tenth, (need work of trig) pleas

Answers

This is how my teacher taught me hopefully it's the same way for yoy

WRITE AN EQUATION AND SOLVE FOR X.
x + 10 -
A
B
С
5
2x+6

Answers

the variable x is equal to -1

x+10 =5 that is the answer because look at the example

A pig weighs 9.8 pounds. Convert the pig's weight to ounces

Answers

The answer to you’re question of the pig is 156.8 ounces

HELP O_O

Use the remainder theorem to find the remainder when p(x)=x^4-9x^3-5x^2-3x+4 is divided by x+5


A.) 1644
B.) 1244
C.) -636
D.) -644

Answers

Answer:

A.) 1644

given equation:  [tex]\sf p(x)=x^4-9x^3-5x^2-3x+4[/tex]

To be divided with ( x + 5 )

Then,

x + 5 = 0

x = -5

Put this into the equation to find the remainder.

[tex]\sf p(x)=(-5)^4-9(-5)^3-5(-5)^2-3(-5)+4[/tex]

[tex]\sf p(x)= 1644[/tex]

Use the remainder theorem to find the remainder when p(x)=x^4-9x^3-5x^2-3x+4 is divided by x+5

A.) 1644

B.) 1244

C.) -636

D.) -644

~~~~~~~~~~~~~~~~~~~~~

[tex]\sf p(x)=x^4-9x^3-5x^2-3x+4[/tex]

[tex] \sf p(x) = (-5)^4 - 9(-5)^3 (-5)^2 - 3 (-5) + 4 [/tex]

[tex] \sf \green {(p(x) = 1644)} [/tex]

#CarryOnLearning

#LibreAngMatuto

What is the equation

Answers

Answer:

2y = 8

Step-by-step explanation:

an equation contains an = symbol.

the others are inequalities.

also, from looking at the question, you can assume that it is 2y = 8 because the other to are the same type of inequality

HELP
Each face of a cube has an area of 14 cm².
What is the surface area of the cube?

Answers

Answer:

84cm^2

Step-by-step explanation:

A cube has 6 sides so we multiply the measurement of one of the sides by 6 to get the surface area of the whole cube.

Find the area. Use 3.14 for pi and round your answer

Answers

Answer:

329.9 ft^2

Step-by-step explanation:

area = π · r^2

diameter = 2r so radius = 10.25

area = 3.14 · 10.25^2

10.25^2 = 105.06

3.14 · 105.06 = 329.9 ft^2

Given :-

diameter = 20.5 ftπ = 3.14

[tex] \\ \\ [/tex]

To find :-

Area

[tex] \\ \\ [/tex]

Solution:

To find area first we should know value of radius.

Diameter is given , and from diameter we can find value of radius.

[tex] \\ [/tex]

We know :-

[tex] \bf \ddag\boxed{\rm Diameter =2 \: radius } \bf \ddag[/tex]

By using this formula we can find radius.

[tex] \\ \\ [/tex]

[tex] \hookrightarrow\sf Diameter =2 \: radius [/tex]

[tex] \\ [/tex]

[tex] \hookrightarrow\sf 20.5 =2 \: radius [/tex]

[tex] \\ [/tex]

[tex] \hookrightarrow\sf \dfrac{205}{10} =2 \: radius [/tex]

[tex] \\ [/tex]

[tex] \hookrightarrow\sf \cancel\dfrac{205}{10} =2 \: radius [/tex]

[tex] \\ [/tex]

[tex] \hookrightarrow\sf \dfrac{41}{2} =2 \: radius [/tex]

[tex] \\ [/tex]

[tex] \hookrightarrow\sf2 \: radius = \dfrac{41}{2} [/tex]

[tex] \\ [/tex]

[tex] \hookrightarrow\sf \: radius = \dfrac{41}{2 \times 2} [/tex]

[tex] \\ [/tex]

[tex] \hookrightarrow\sf \: radius = \dfrac{41}{4} [/tex]

[tex] \\ [/tex]

[tex] \hookrightarrow\bf \: radius = 10.25[/tex]

[tex] \\ \\ [/tex]

Now let's find Area

we know :-

[tex] \bf \ddag\boxed{\rm Area = \pi radius {}^{2} } \bf \ddag[/tex]

[tex] \\ \\ [/tex]

So:-

[tex] \\ [/tex]

[tex] \dashrightarrow \sf Area = \pi radius {}^{2} [/tex]

[tex] \\ \\ [/tex]

[tex] \dashrightarrow \sf Area = \pi (10.5) {}^{2} [/tex]

[tex] \\ \\ [/tex]

[tex] \dashrightarrow \sf Area = \pi \times 10.5 \times 10.5 \\ [/tex]

[tex] \\ \\ [/tex]

[tex] \dashrightarrow \sf Area = \pi \times 110.25 \\ [/tex]

[tex] \\ \\ [/tex]

[tex] \dashrightarrow \sf Area = 3.14 \times 110.25 \\ [/tex]

[tex] \\ \\ [/tex]

[tex] \dashrightarrow \bf Area =346.19~ {ft}^{2} \{approx\}\\[/tex]

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how do i solve this A and \angle BB are supplementary angles. If m\angle A=(2x+26)^{\circ}A=(2x+26) and m\angle B=(x+25)^{\circ}B=(x+25) , then find the measure of \angle BB Justify four reasons why the Neolithic age has been described by historians as age of Neolithic revolution. Not less than four pages with references. Why do you think begins to cry and cannot stop? What the important of school based assessment April iswhen the earthparades in a green so brand-newyou can almost hear it playing a tune,turning tight budsof forsythia bushesinto tiny yellow trumpets,waking the dozing daffodils. AndApril iswhen your blue slickercollects beadsof misty drizzleand the walk to Grandmas houseis a skip-splash-dance! Andwhen you get thereGrandmatells you how each springshe falls in love with the worldall over againand you understand. April iswhen the earthparades in a green so brand-newyou can almost hear it playing a tune,turning tight budsof forsythia bushesinto tiny yellow trumpets,waking the dozing daffodils. AndApril iswhen your blue slickercollects beadsof misty drizzleand the walk to Grandmas houseis a skip-splash-dance! Andwhen you get thereGrandmatells you how each springshe falls in love with the worldall over again and you understandHow does the speaker's point of view about spring compare to their grandmother's? Which is a characteristic of an economic region? Water source will go in the water plant and will be make to electricity to energy and be transferred to houses. Thats the answer. Free point. An angle measures 18 less than the measure of its supplementary angle. What is themeasure of each angle? name any five components of the Photoshop window True or False: High levels of carbon monoxide must be present for a victim to become disoriented and lose consciousness. find the mode of 8,6,7,9,7,0,2,3,5,7,8,9,6,9 Construct an explanation about why it is both an advantage and a disadvantage to have mineral resources concentrated in one place rather than scattered all around. 6.To acquire a probationary license you must completed six months ofsupervised driving without any suspensions or postponements and passMVC's road test *O TrueO False Please help with this question! Select all expressions Find the value of 10x and 30 Canberra is somewhere _____ Sydney and Melbourne. *betweenamongtoat Determine if true:3x9^2=188 Do dillering philosophies always milan different conclusions?