Please help me with this question

Please Help Me With This Question

Answers

Answer 1

Therefore , the solution of the given problem of trigonometry comes out to be Cos 2x = -0.760355.

Trigonometry is what?

The study of relationships among triangle angles and angles is known as trigonometry. Mathematical modeling is a fundamental idea in all of geometry because it can be used to reduce any straight-sided form to a collection of triangles. Amazingly complex connections exist between trigonometry and other areas of mathematics, particularly mathematics, real or complicated, infinite series, logarithms, and infinite series.

Here,

Given : Cosx = 9/26 (First quadrant)

To find : Cos2x

We use the formula:

=>Cos2x = 2Cos²x -1

=> Cos2x  = 2(9/26)² - 1

=> Cos 2x = -0.760355

Therefore , the solution of the given problem of trigonometry comes out to be Cos 2x = -0.760355.

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Related Questions

Can someone help me please
Find the solution to the system of equations.
y=-2x+7
y=5x-7

Answers

Let's solve your system by substitution.
y
=

2
x
+
7
;
y
=
5
x

7

Step: Solve
y
=

2
x
+
7
for y:
y
=

2
x
+
7

Step: Substitute

2
x
+
7
for
y
in
y
=
5
x

7
:
y
=
5
x

7

2
x
+
7
=
5
x

7

2
x
+
7
+

5
x
=
5
x

7
+

5
x
(Add -5x to both sides)

7
x
+
7
=

7

7
x
+
7
+

7
=

7
+

7
(Add -7 to both sides)

7
x
=

14

7
x

7
=

14

7
(Divide both sides by -7)
x
=
2

Step: Substitute
2
for
x
in
y
=

2
x
+
7
:
y
=

2
x
+
7
y
=
(

2
)
(
2
)
+
7
y
=
3
(Simplify both sides of the equation)

Answer: x=2 and y=3

Please help me please !!!!!

Answers

Answer: D; 2.72

Step-by-step explanation:

solve for n...

5.6 + 1.4n = 2.4n + 2.88 (expanding brackets)

2.72 = 1n

n = 2.72

Answer:

D - It is the n value. Now do the math...

Other Characters (Warning Ahead : SPAM) :

fnewdnfiweashuiashdlhashcjkdahiufchasi

find the quotient if 3.5 is divided by 14

Answers

Answer:

1/4

Step-by-step explanation:

3.5 = 3 1/2 = 7/2

7/2 ÷ 14 = 7/2 × 1/14 = 1/4

The quotient is 1/4

3.5 = 3 1/2 = 7/2

7/2 ÷ 14 = 7/2 × 1/14 = 1/4

What is problem-solving?

Problem-solving is the act of defining a problem; figuring out the purpose of the trouble; identifying, prioritizing, and selecting alternatives for an answer; and imposing an answer.

Problem-solving starts with identifying the issue. As an example, a trainer may need to parent out a way to improve a scholar's overall performance on a writing talent test. To do that, the instructor will overview the writing exams looking for regions for improvement.

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Write a piecewise-defined function for this graph please!

Answers

The piecewise-defined function for this graph will be y = -(3/5)x - 4/5 for x < 2 and y = (5/2)x - 7 for x ≥ 2.

What is a function?

A function is an assertion, concept, or principle that establishes an association between two variables. Functions may be found throughout mathematics and are essential for the development of significant links.

The equation of the line that passes through (-3, 1) and (2, -2) is given as,

(y + 2) = [(- 2 - 1) / (2 + 3)](x - 2)

y + 2 = - (3/5)x + 6/5

y = -(3/5)x - 4/5

The equation of the line that passes through (2, -2) and (4, 3) is given as,

(y + 2) = [(3 + 2) / (4 - 2)](x - 2)

y + 2 = (5/2)x - 5

y = (5/2)x - 7

The piecewise-defined function for this graph will be y = -(3/5)x - 4/5 for x < 2 and y = (5/2)x - 7 for x ≥ 2.

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Two number cubes were rolled 10 times, and the sum of each roll was recorded in the table.

Answers

Answer:

pls give a bigger view of the table

Step-by-step explanation:

Solve for d

3/2 = 5d - 1/2

Answers

Answer:

d = 0.4

5*0.4 = 2

2 = 4/2

4/2 - 1/2 = 3/2

Pls help I’m rlly confused. The question says “find the value of x using complementary angels” ty <3

Answers

Answer:

x=83. please look below for explanation. if anything isn't clear, please ask

Step-by-step explanation:

so complementary means adding up to 90 degrees in math. in this particular equation, you have to make sure that both (x-18) and 25 add up to 90.

if that other side is 25 degrees, the other side must be 65 because 90-25=65.

so now you have to set those equal to each other like this:

65 = (x-18)    now just solve for x

add the 18 to the other side. the -18 and +18 cancel.

x=83

so to test and to see if that is right, we can do

83-18 = 65

does 65+25 equal 90? yes

therefore, x=83

The market research department of a Company recommends that the Company to manufacture and market a new transistor radio after suitable test. The marketing department also presents the following demand equation.​X=5,000-500P i.e. P=10-X/500
Furthermore, the financial department provides the following cost equation:​ C(X) = 7, 000 + 2x
Using derivatives Find Marginal cost, Marginal revenue and Marginal profit of the company.

Answers

The market research department of a Company recommends that the Company to manufacture and market a new transistor radio after suitable test. The marginal cost of the company is 7000 - 2X  and marginal revenue is 10X - X/250.

What is Marginal Cost?

Marginal cost is an extra cost per unit incurred when an extra unit of output produced or service rendered. Or in other words it can be said that marginal cost is an element of additional unit cost that incurred due to production of goods or services. Some time it is also considering as relevant cost or variable cost.

So in order to compute the transistor manufacturing company's marginal cost, marginal revenue and marginal profit of the company one shall equated the derivative function between them.

In micro economics technical relationship between the said marginal terms is written through derivative function:

Revenue = Price × Quantity Demanded,

Profit Maximize Point where Marginal cost is equal to marginal revenue;

MR = MC,

The marketing department also presents the following demand equation:

X = 5,000 - 500 P

P = 10 - (X ÷ 500), where P is Price and X is quantity demand.

Furthermore, the financial department provides the following cost equation:​

C(X) = 7, 000 + 2x

So the revenue function by the help of substitution method:

X = 5,000 - 500 P

Revenue = Price × Quantity Demanded,

Revenue =  10 - (X ÷ 500) × X

               =  10X - X^2 ÷ 500

Marginal Revenue! = 10X - !2X/500 = 10X - X/250

Marginal Cost =  7, 000 + 2 (5,000 - 500 P)

= 7000 + 10000 - 1000 P

= 17000 - 1000 ( 10 - (X ÷ 500))

= 17000 - 10000 - 2X

= 7000 - 2X

Therefore marginal revenue is revenue or additional earning made by a seller by selling an extra unit. Revenue is earned when extra unit is being sold.

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Which table represents the function y = 2x + 4?

Answers

Answer:

I believe the answer is C, however I'm not completely sure. Let me know if I can fix it! I'm not 100% sure, I'm sorry if it's wrong!

Step-by-step explanation:

I hope this helps, please remember to give five stars, press the heart, and mark brainliest. If you need any more help, please let me know!

*optional* amos: tealyn337

In the figure shown, AB and CD are parallel. AB and CD are intersected by EH at points F and G, respectively. The measure of LEFA is (x - 5)°, and the measure of ZDGF is (73x - 365) °. What is the measure, in degrees, of ZDGH?

Answers

The value of the variable 'x' is 273/27. Then the measure of the angle ∠DGH will be 2.43°.

What is an angle?

The inclination is the separation seen between planes or vectors that meet. Degrees are another way to indicate the slope. For a full rotation, the angle is 360°.

Supplementary angle - Two angles are said to be supplementary angles if their sum is 180 degrees.

Corresponding angle - If two lines are parallel then the third line. The corresponding angles are equal angles.

Vertically opposite angle - When two lines intersect, then their opposite angles are equal.

The diagram is given below.

Then the equation is written as,

∠EFA + ∠DGF = 180°

x - 5 + 73x - 365 = 180°

74x = 550

x = 273/27

Then the measure of the angle ∠DGF is given as,

∠DGF = 73(273/27) - 365

∠DGF = 177.57°

Then the measure of the angle ∠DGH will be calculated as,

∠DGH + ∠DGF = 180°

∠DGH + 177.57° = 180°

∠DGH = 2.43°

The value of the variable 'x' is 273/27. Then the measure of the angle ∠DGH will be 2.43°.

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can someone help i will give brainliest

Answers

Answer:

24

Step-by-step explanation:

the rate of change is represented by the 24,  just like in the slope-intercept equation  y = mx + b, where "m" represents the slope, or rate of change.  

three friends equally share 1/2 of a pizza. how much of the pizza does each friend get

Answers

1/6 of the entire pizza and 1/3 of the half portion.
Each one of them gets 1/6 of the pizza.

Solution: 1/2 of a pizza x 1/3 friend = 1/6 pizza per friend.

HELP FAST 45 POINTS WILL GIVE BEST ANSWER BRAINLIEST

Answers

Answer:

1343.42 in³

I am sure about this answer because I had this in my syllabus last year.

Answer:

Vtotal = (vol of prism) + (1/2)(vol of cylinder)

volume of prism = 9×10×11 = 990 in^3

volume of cylinder = pi×(5in)^2×(9in)

= 225pi in^3

Therefore, the total volume is

Vtotal = 990 in^3 + (1/2)(225pi in^3)

= 1343.4 in^3

Estimate the measure of ∠FBE in the diagram.

10° ,
30°
90°
80°

Answers

Answer:

Im not sure but I think it's 30⁰

The foot, the pound, and the gallon are all example of ______ units. This system of measurement was first devised in England

Answers

Are all examples of imperial units, possibly

80% of 50 children passed a test. How many did not pass? ​

Answers

Answer:

10 children

Step-by-step explanation:

?/50 = 80/100

Multiply 50 by 80 then divide by 100

50 times 80 = 4,000 divided by 100 is 40

40 children passed the test

Now subtract 40 from 50 to get 10

10 children did not pass the test

***** 6. A certain movie is 105 minutes long. It started at 6:15 pm. During the movie, there were two commercial breaks, one lasting 9 minutes and one lasting 6 minutes. At what what time did the movie finish​

Answers

According to the given conditions in the question, the movie did finish at 8:15pm exactly.

What is the average  movie length in hollywood?

The average movie length of movies in hollywood is  around 120 -130 mins per movie. However this fact can vary as per the genre and type of the film.

How are movies helping to improve world economy?

The movie business, usually referred to as the film industry, has a big influence on the economy. For those involved in the industry, such as performers, directors, camera operators, sound technicians, special effects designers, and theater owners, the creation and distribution of films can result in jobs and financial gain.

The local economy can benefit from the tourists that movies can bring to an area where a movie is being made or is located. The money made by persons employed in the film business is likely to be spent on other goods and services, stimulating extra economic activity. As a result, the film industry may also have a "multiplier impact" on the economy.

So according to the question, the movie itself started at 6:15 pm, and it lasted for 105 mins , also adding the time for commercials of 9 mins and 6 mins , which ultimately added 15 more mins, the total screen time would be ,

105 + 15 = 120 mins

Which is equal to 2 hrs, so the movie finished at 8:15 pm.

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HELP ASAP PLS
Question 2 of 5
Select all the correct answers.
Which expressions are prime polynomials?

Answers

Answer: There is no picture

Step-by-step explanation:

PLEASE HELP! FOR 10 POINTS. CLASSIFY THE TRIANGLE ON ANGLE AND SIDE LENGTH, WHAT IS THE ANSWER AND HOW CAN I SOLVE IT? SHOW UR WORK OR EXPLAIN THANKS

question classify the triangle based on the angle measured and side length

Answers

Answer:

Right Isosceles triangle

Step-by-step explanation:

The Square on the triangle represents a right angle

An Isosceles triangle is a triangle that has 2 sides equal and 1 a different length

I need help with question

Answers

Answer:

20

Step-by-step explanation:

Scale factor = 8/16 = 1/2

So, 10/x = 1/2

x = 10*2

x = 20

6. Which expression is equivalent to 22 ?​ HURRY HELP FAST

Answers

Answer: 22+(-3)

Step-by-step explanation:

pls help me i will mark brainliest i just need the right answer

Answers

Answer:

A = 34.84

Step-by-step explanation:

6.7 * 5.2 = 34.84

Answer:

38.84

Step-by-step explanation:

l×w=area, so 6.7 times 5.2 is 38.84. Hope this helps :)

3) A private golf course offers cart rentals for $22 and a round of golf at $1.35 per hole for non-members. After purchasing a box of golf balls at $14.95 and a bottle of Gatorade for $3.25, your total cost was $64.50. How many holes of golf were you able to complete?​

Answers

Answer:

18 round of golf

Step-by-step explanation:

r = # rounds of golf

(22 + 14.95 + 3.25) + 1.35r = 64.50

40.20 + 1.35r = 64.50

1.35r = 24.30

r = 18

Answer:

18 kkkkkkkkkkkkkkkkkkkk

Please help, I will mark you brainiest, thank you!!

Answers

8x + 30=110
110-30=80/8=10
Your answer is x = 10

Operation research is the application of which methods to arrive at the optimal solution to the problems?

Answers

Answer:

BEDMAS

Step-by-step explanation:

first: inside the bracket.

second: exponent

third and fourth :division or multiplication. Wich come first.

last :addition or subtraction. Wich come first .

calculate the total area of the walls of a hospital ward 5m long, 4m wide and 2 and half metres high


Answers

Answer:

40

Step-by-step explanation:

Computer the following some, Thanks !

Answers

Answer:

184233

Step-by-step explanation:

651∑n=1 88+0.6(n-1)

651∑n=1 88 + 651∑n=1 0.6(n-1)

(651)(88) + 0.6(651∑n=1 (n-1))

57288 + 0.6((651∑n=1 (n))-(651∑n=1 (-1))

57288 + 0.6((651)(652)/2+(651)(-1))

57288 + 0.6(212226-651)

57288 + 0.6(211575)

57288 + 126945

184233

Five weeks after the introduction of a new toy, the manufacturer found that the demand for the toy was modeled by f(x) = x^2 +5x+4/x^2+6x-7 - 1/x , while the company s supply capability was modeled by g(x) = - 0.89x^2 +850x -50/(800x+70.5. Here x is the number of weeks the toy has been on the market, and values of f(x) and g(x) are in millions of toy units. About how many weeks after the toy was introduced did supply equal demand? Round to the nearest whole number of weeks.

Answers

Answer:

76 weeks

Step-by-step explanation:

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PLEASE HELP ME ITS MULTIPLE CHOICE

Answers

Answer:

Step-by-step explanation:

The answer is class D so number 4

8x +1 =7x +5

Please help me

Answers

Answer:

x = 4

Step-by-step explanation:

i. 8x + 1 = 7x + 5

ii. 8x - 7x = 5 - 1

iii. x = 4

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