please help me simplify this​

Please Help Me Simplify This

Answers

Answer 1

Step-by-step explanation:

Given

sin(α+β) cos(α-β) +cos(α+β) sin(α -β)

We can see it is in the formula of

sin(A + B) = sinA cosB + cosA sinB

So now

Sin ( α + β + α - β)

= sin 2α

Or we can write sin2α as

= 2 sin α * cos α

Hope it will help :)❤


Related Questions

V= u +at U=2 A=-5 T=1/2 Work out the value of v



Answers

Answer:

v =-1/2 hope it may help u

Step-by-step explanation:

v =u+at

v=2 -5/2

v=4-5/2

v=-1/2/2

Answer:

Step-by-step explanation:

Given

u = 2 , a = - 5 t = 1/2

Now

v = u + at

  = 2 + (-5) * 1/2

 = ( 4 - 5) /2

 = - 1/2

helpppppppp fassstttttttt​

Answers

Answer:

133

Step-by-step explanation:


Identify pair of adjacent angles and vertically opposite angles from the
following figures.

Answers

Answer:

adjacent angle pair is ∠AOD and ∠DOB    (could be any two that are next to each other)

vertically opposite angles are ∠AOD and ∠COB (also could be ∠AOC and ∠DOB

Step-by-step explanation:

The number of 5p, 10p, and
20p coins in a jar are in the
ratio 7:4:3. If there are
5p coins are worth 70p
calculate the total value of
the money in the jar.

Answers

Answer:

Step-by-step explanation:

70p/5=14

14*4=56*10=560p

14*3=42*20=840p

840+560+70=1470

=1470p or (£14.70)

The total value of money in the jar is 270p.

What is addition?

Combining objects and counting them as one big group is done through addition. In arithmetic, addition is the process of adding two or more integers together. Addends are the numbers that are added, and the sum refers to the outcome of the operation.

Given:

The number of 5p, 10p, and 20p coins in a jar are in the ratio 7:4:3.

That means,

Number of 5p coins are 5x, 10p coins are 4x and 20p coins are 3x.

And 5p coins are worth 70p.

That means, x = 70p/5p

x = 14

So,

The total worth of coins are,

= 70p + 80p + 120p

= 270p

Therefore, the worth of the coins are 270p.

To learn more about the addition;

brainly.com/question/29464370

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A circle has a diameter of 16 cm. Find its circumference. (Use the calculator's value
of 1. Round your answer to the nearest tenth.).

Answers

Answer:

the answer rounded to the nearest tenth is 37.7 cm.

Step-by-step explanation:

Honestly I'm stressed doing schoolwork. Girl bestie to play iMessage games??

Answers

Answer:

wut-

Step-by-step explanation:

Nicholas Has a very large soup pot shaped like a cylinder that has a height of 20 inches and a radius of 6 inches. How much soup can Nicholas’s soup pot hold ?

Answers

Answer:

2262 in³

Step-by-step explanation:

Given that:

Height, h = 20 inches

Radius, r = 6 inches

Volume of a cylinder is given as :

V = πr²h

V = π * 6² * 20

V = π * 36 * 20

V = 2261.9467 in³

Hence, Nicholas pot can hold about 2262 in³ of soup

The Martinez Family has driven 240 miles so far. Their total trip is 300 miles. What percentage of the trip have they already driven?

Answers

They have driven 80% of their trip.
Work in picture ↓

!!!Please help will give the brainliest, and please do not put in a silly answer because you want some points or I will report you!!! What are the properties for each of these shapes and please be specific for each, a kite, trapezoid, square, rectangle, parallelogram, rhombus?

Answers

Answer:

The properties of trapezoid apply by definition (parallel bases).

The legs are congruent by definition.

The lower base angles are congruent.

The upper base angles are congruent.

Any lower base angle is supplementary to any upper base angle.

The diagonals are congruent.The bases are parallel by definition.

Each lower base angle is supplementary to the upper base angle on the same side.

A coat is on sale for 30% off the original price of 120$.what is the amount of discount

Answers

Answer:

36

Step-by-step explanation:

You do 120 multiplied by .3 to get 36. This makes the discount amount is $36 which also means you only pay $84 for the coat.

PLEASE HELP IF POSSIBLE :)

Answers

Answer:

JM = 20

Step-by-step explanation:

Find the value of JM

Using similar triangles;

MJ/HN = GJ/HK

GJ+JM/HN = GJ/HK

15+JM/12+16 = 15/12

15+JM/28 = 15/12

Cross multiply

12(15+JM) = 15*28

180+12JM = 420

12JM = 420 - 180

12JM = 240

JM = 240/12

JM = 20

Hence the length of JM is 20

The figure below shows a right pyramid with a square base.
Imagine a cross-section of the pyramid formed by a plane cutting through it that meets these conditions.
• The plane passes through the top vertex of the pyramid.
The plane is perpendicular to the base of the pyramid.
What must be true about the cross section?
o It is a right triangle.
O It is an isosceles triangle.
0 It is an obtuse triangle.
It is an equilateral triangle.

Answers

Answer:

Step-by-step explanation:

13 POINTS FOR THIS PLEASE

Answers

Answer: Independnt Variable: direct light

Dependnt variable: the plant growth

Step-by-step explanation:

The plant growth depends on the light

please would you be so kind and help me with problems four through 12?

Answers

I will do 4 and 5 only. Also, post one problem at a time.

Question 4

Measure of arc GJ = measure of the central angle, which in this case is 90 degrees. So, the measure of arc GJ = 90°.

Question 5

The measure of diameter HJ = 180 degrees.

We need to find the adjacent angle which I will call angle x.

So, x = 180° - 151° = 29 degrees.

Just like Question 4 above, the measure of 29 degrees is the central angle for arc HI.

As you know, HI = the measure of the central angle. So, the measure of arc HI = 29°.

Try the rest on your own.

As you do the rest, keep in mind that the measure of a circle in terms of degrees is 360 degrees. This will help you do the rest of the questions for circle B.

Income East and West of the Mississippi




For a random sample of households in the US, we record annual household income, whether the location is east or west of the Mississippi River, and number of children. We are interested in determining whether there is a difference in average household income between those east of the Mississippi and those west of the Mississippi.



Incorrect answer iconYour answer is incorrect.



(a) State the null and alternative hypotheses. Your answer should be an expression composed of symbols:



Let group 1 be the households east of the Mississippi River and let group 2 be the households west of the Mississippi River.



(b) What statistic(s) from the sample would we use to estimate the difference?



Let group 1 be the households east of the Mississippi River and let group 2 be the households west of the Mississippi River.

Answers

Answer:

H0: μ1 = μ2

H1: μ1 ≠ μ2 ;

xbar1 - xbar2

Step-by-step explanation:

The Null hypothesis should state that there is no difference in average household income between those located east and west of the Mississippi

H0: μ1 = μ2

H1: μ1 ≠ μ2

Statistic from the sample that would be used to estimate difference

Statistic refers to the numerical characteristic derived from the sample.

To estimate the difference in the average household income between those located east and west of the Mississippi, we take the sample mean of the two groups

Group 1, East of Mississippi = xbar 1

Group 2, West of Mississippi River = xbar 2

xbar1 - xbar2

PLZ HELP I WILL GIVE BRAINLIEST

Answers

Answer:

a. the sign is interchange

it should be = x^2 - 3x + 4 - x^3 - 7x + 2

Answer:

see explanation

Step-by-step explanation:

(a)

The student has distributed the second parenthesis by 1 instead of - 1

(b)

Given

(x² - 3x + 4) - (x³ + 7x - 2)

distribute the first parenthesis by 1 and the second by - 1, that is

= x² - 3x + 4 - x³ - 7x + 2 ← collect like terms

= - x³ + x² - 10x + 6

PLEASE HELP ASAP PLEASE!! WILL GIVE BRAINLEST PLEASE​

Answers

Answer:

what is 5x5x8

Step-by-step explanation:

5x5=25

25x8=200

so your awnser is 200

Answer:

105

Step-by-step explanation:

To find the surface area, we need to find the area of all the sides. There are five sides, but four of them are exactly the same.

To find the area of a triangle, you need to do width x height / 2. The width is five and the height is eight. 5 x 8 / 2 = 20. There are three more sides that have the exact same area as this. Since there are four sides that have a surface area of twenty, we do 20 x 4 = 80. Then, we find the area of the bottom piece. To find the area of a square, you need to do length x width. 5 x 5 = 25. Then, we add our two areas to get the final result. 80 + 25 = 105. Therefore, 105 is the surface area of the pyramid.

Hope this helps! Thanks for brainliest! :D

Simplify
sec x - tan x sin x

Answers

Answer:

cos x

Step-by-step explanation:

sec x - tan x sin x

[tex]\frac{1}{cosx} - \frac{sinx}{cosx} * sinx\\\\\frac{1}{cosx} - \frac{sin^{2}x}{cosx}\\\\\frac{1-sin^{2}x}{cosx} \\\\\frac{cos^{2}x }{cosx} \\\\cosx[/tex]

What is the answer please help

Answers

Answer:

I don't see a problem on the screen

Step-by-step explanation:

The area of the parallelogram below is ____ square meters.

Answers

Answer:

63

Step-by-step explanation:

9 * 7 = 63

At a zoological​ garden, 3 people ride the tram for every 4 people who​ don't ride it. Write the ratio of people who ride the tram to all people in three ways. Write the ratio of all people to people who​ don't ride the tram in three ways. Write the ratio of people who ride the tram to all people in three ways.

Answers

Answer:

= 3 to 7

= 3 : 7

= 3/7

Step-by-step explanation:

Number of people who ride the tram = 3

Number of people who does not ride the tram = 4

Total people = 3 + 4 = 7

Ratio of people who ride the tram to all people in three ways.

= 3 to 7

= 3 : 7

= 3/7

Ratio of all people to people who​ don't ride the tram in three ways.

= 7 to 4

= 7 : 4

= 7/4

Ratio of people who ride the tram to all people in three ways.

= 3 to 7

= 3 : 7

= 3/7

Hal's business made 50,0000 last year. This year, his business made 650,000. What is the percentage difference?

Answers

The percentage difference in the amounts made is 30%.

What is the percentage difference?

Percentage can be described as a fraction out of an amount that is usually expressed as a number out of hundred.

Percentage difference= [ (amount made this year / amount made last year) - 1 ] x 100

'(650,000 / 500,000) - 1] x 100 = 30%

To learn more about percentages, please check: https://brainly.com/question/25764815

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The proper height of a highway guardrail is 27 inches, but 3 inches higher or lower is acceptable. Which inequality represents the acceptable heights, h, of a highway guardrail?
A.|h+27|≤3
B.|h−3|≤27
C.|h+3|≤27
D.|h−27|≤3

Answers

Answer:

Step-by-step explanation:

27 is the "center" of a range of measurements of the height of the guard rail.  The height could be as much as 30 inches or as little as 24 inches.  The absolute value operator encloses "x - 27," where 27 is the "center."  The acceptable excess or acceptable deficiency is 3 inches.  

So now we can eliminate possible answers B and C, in both cases because 27 is inappropriately greater than 3.

Narrowing down our choices, we have h + 27 and h - 27 inside the absolute value operator.  27 is a positive quantity (height of the guard rail), so the inequality showing +27 as the "center" is correct; that is

D:  |h - 27| ≤ 3 (measurements in inches).

find the value of given expression

[tex] \sqrt{63 \times 63} [/tex]

Answers

Answer:

± 63

Step-by-step explanation:

[tex]\sqrt{63*63} = \sqrt{63^2} =[/tex] ± 63

Answer:

√(63×63)=√63²=±63 is your answer

find the value of given expression

[tex] \sqrt{213 \times 213} [/tex]

Answers

Answer:

213 Answer ..............

Answer:

√{213×213}=√213²=±213 is your answer

7. A minor arc of a circle subtends an angle of 1059 at the centre of the circle. If the radius of the circle is 8.4 cm,
find the length of the major arc.
[tex]\pi = 22 \\ 7[/tex]

Answers

25 56 times 46 that is the answer becasue it is

estimate the product then find the product​

Answers

Answer:

1 5/6 = 11/6

7 1/3 = 22/3

11/6 + 22/3 = 11/6 + 44/6 = 55/6 ≈ 9.16

1 5/6 = 11/6

11/6 - 1/10

55/30 - 3/30 = 52/30 ≈ 1.73

9.16 x 1.73 = 15.8468

So, 15.8468 is the result.

I hope this is helpful. :)

Please, do me Brainliest!

Anyone help please god lord please

Answers

here are the answers:

#1

#2=11

#3=-2

#4=70

Determine whether the measures for the figure shown are proportional.
a. the length of a side and the perimeter
b. the length of a side and the area

Answers

I think answer should be a. Please give me brainlest let me know if it’s correct or not okay thanks bye I hope you have a great day

An item is regularly priced at $30. It is now priced at a discount of 30% off the regular price. What is the price now?

Answers

The price of the item will be 21$
Other Questions
The geographic barrier to the south is the:-Gobi Desert-Altai Mountains-South China SeaThe East China Sea is a geographic barrier to the:-East-North-WestThe Gobi desert is a geographic barrier to the:-East-North-South instruction: Rewrite the following sentence Example:(Se acuerda de eso.)-No hay nadie que (se acuerde de eso.)1. (La proximidad de una juguetera nos conviene.)-Dudo que (______________)2. (Los padres evitan las tiendas de galleticas y dulces.)-No creo que (____________) 3. (Ella quiere pagar ms de mil dlares de alquiler mensual.)-No estoy seguro de que (__________)4. (Necesitamos afectar la estructura del local.)No es verdad que (___________)5. (Hay un espacio que se adapta a nuestras necesidades.)-Buscamos un espacio que (____________)6. (Uds. nos autorizan a investigar su crdito.)-Hay alguien que (____________).7. (El local mide 800 pies cuadrados.)-No hay ningn local que (________)8. (Le interesa alquilar un espacio ms grande.)-Conoces a alguien a quien (___________)9. (Quiere poner una juguetera.)-Sabes de alguien que (__________)10. (T puedes ir a hacer el depsito hoy.)-Dudo que (______________) Each side of a square piece of plastic is 2 centimeters long. What is the piece of plastic's area? Kala deposits $7000 into an account that pays simple Interest at a rate of 4% per year How much interest will she be paid in the first 4 years? Who was the intended audience that Dr. King hoped would read his "Letter from a Birmingham jail Match the word to its description. Christina built a small hot air balloon and recorded the distance it traveler (v) during the first 4 seconds after starting (s) Which of the following equations representd the relationship between the distance traveled and the elpsed time? A: v=1.2sB: s=1.2vC:v=1.2+sD:s=1.2+vTable is attatched Secondary growth would not result in which of these things?- Thickening of shoots- Secondary roots- Creation of secondary xylem- Extension of shoot what word best describes power or superiority over others Which character Wat do the details in the except reveal about Kawaba? ABC is dilated by a scale factor of 1/2 to produce ABC. What is AB, the length AB after the dilation? What is the measure of Help me Im struggling with this one hellppp me guyyssss What kind of government do they have on the Island of Sala-ma-Sond under Yurtle? (A) Democracy(b) totitarilan(c) capitalist Please help me! Im giving brainliest to whoever is right first 13 out of 27 sixth-grade students said they prefer Powerade to Gatorade. What percent voted for Powerade? What percent voted for Gatorade? I'm doing a health crossword puzzle and need help.. one of the crosswords says physical, mental/Emotional, and social health and I can't think of what word goes in the blank please help!Also: no links. if the answer you give Is wrong, I won't give you the points. thanks PLEASE HELPA family originally bought a home for $712,980. Now, a few years later, the home isworth $1,180,627.70. What was the percent of increase in its value? (Round your answer tothe nearest whole number.) Hybrid plants are more likely to be sterile than open-pollinated plants.TrueFalse please tell me what this answer is