I DON'T KNOW HOW TO PROVE THIS IDENTITY, CAN U GUYS HELP ME ?​

I DON'T KNOW HOW TO PROVE THIS IDENTITY, CAN U GUYS HELP ME ?

Answers

Answer 1

Try this way, all the details are in the attachment.

I DON'T KNOW HOW TO PROVE THIS IDENTITY, CAN U GUYS HELP ME ?

Related Questions

what is the distance between -8 and 535 on a number line

Answers

Answer:

527

Step-by-step explanation:

because i did it in the calculator

A bag of skittles includes 3 reds, 2 purple, 4 green, 2 organge, and 6 yellow. True or False - Is the theoretical probability of pulling a yellow out of the bag 3/11?

Answers

Answer:

true

Step-by-step explanation:

Answer:

False

Step-by-step explanation:

3 + 2 + 4 + 2 + 6 = 17

6/17, it cant be simplifed

The cost of a barrel of beans, b, fluctuates by 17% in both directions during a three-month period. Match each verbal description of the high and low cost of a barrel of beans with all

Answers

Answer:

b is increased by 17% : A and E

b is decreased by 17%: H and J

Step-by-step explanation: took the test

To find the diameter of a circle, multiply its radius by two. True or faulse

Answers

Answer: True

Step-by-step explanation:

You wonder if weather (rain, cloudy or sunny) makes a difference on mood (happy or not). To determine this, you sample the moods of 200 people on a sunny day, 200 people on a rainy day and 200 people on a cloudy day and record whether they were happy or not. You then want to do a chi square test on this data. What are the degrees of freedom?

Answers

Answer:

2

Step-by-step explanation:

Drawing a table to show the different weather and mood options :

The degree of freedom :

________ WEATHER ________

__________Rain ____ sunny _____ cloudy

Happy

|

Not happy

Here, we have a contingency table formatted in rows and columns

The columns = 3

The rows = 2

Degree of freedom :

(rows - 1) * ( columns - 1)

(2 - 1) * (3 - 1)

1 * 2

= 2

The degree of freedom = 2

Mathilda adds up all the natural numbers from 1 to 10 and obtains a sum of S. Then she adds up 3 odd numbers between 1 and 10 and gets a sum of s. Which of the following could not be the value of S - s? HELP ASAP ILL MARK BRAINLIEST FOR CORRECT ANSWER. NO USING LINKS OR PDF OR USING FOR POINTS OR ELSE ILL REPORT U

A. 32
B. 36
C. 34
D. 40
E. 38

Answers

the answer is B). 36

Answer:

A. 32

Step-by-step explanation:

1+2+3+4+5+6+7+8+9+10=55

55-32=23

55-36=19--can

55-34=21--can

55-40=15--can

55-38=17--can

combo of 3

1,3,5=9

137=11

139=13

157=13

159=15

179=17

357=15

359=17

379=19

579=21

A computer is priced at $1575, but is on sale for 15% off. What is the price of the computer
after the discount and 7.5% sales tax?

Answers

Answer:

$1439.16

Step-by-step explanation:

1.) 15% of 1575

1575 x 0.15 = 236.25

1575 - 236.25 = 1338.75

So 15% of $1575 = $1338.75

2.) $1338.75 with sales tax if 7.5%

1338.75 x 0.075 = 100.40625 rounded to the nearest hundredths place is 100.41

1338.75 + 100.41 = 1439.16

so you answer is $1439.16

eric purchased n notebook. they were 4 dollars each. write an equation to represent the total cost c that eric paid.​

Answers

Answer:

N = 4

Step-by-step explanation:

An object is spinning around a circle at a rate of 420 revolutions per minute. If the circle has a diameter of 8 feet, what is its angular speed in degrees per minute. Do not add the units into your answer.

Answers

Answer:

Step-by-step explanation:

This seems more like a physics questions, but i'll help you  :P

the circle is 8 feet across or a radius of 4 feet

circumference of the circle is 2[tex]\pi[/tex]r  = 25.132741 feet

it's going around 420 times a minute

420 * 25.132741 = 10555.75132 feet per minute

10,555.75

red die and a blue die are rolled. You win or lose money depending on the sum of the values of the two dice. If the sum is 5 or 9, you win $6. If the sum is 6, 7, or 12, you win $2. If the sum is any other value (2, 3, 4, 8, 10, or 11), you lose $4. Let X be a random variable that corresponds to your net winnings in dollars. What is the expected value of X

Answers

Answer:

The expected value of X is $0.2222.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

For each dice, there are 6 possible outcomes(values from 1 to 6). So for 2 dices, there are [tex]6^2 = 36[/tex] possible outcomes.

Desired outcomes:

Sum 5: (1,4), (2,3), (3,2), (4,1).

Sum 6: (1,5),(2,4),(3,3),(4,2),(5,1)

Sum 7: (1,6), (2,5), (3,4), (4,3), (5,2), (6,1)

Sum of 9: (3,6), (4,5), (5,4), (6,3);

Sum of 12: (6,6)

Probabilities:

4 + 4 = 8 outcomes with a sum of 5 or 9.

8/36 = 2/9 probability of a sum of 5 or 9.

12 outcomes with a sum of 6, 7 or 12.

12/36 = 1/3 probability of the sum being 6, 7 or 12.

36 - 20 = 16 outcomes in which the sum is any other value. So

16/36 = 4/9 probability of a sum of any other value.

What is the expected value of X?

2/9 probability of earning $6.

1/3 = 3/9 probability of earning $2.

4/9 probability of losing $4.

Multiplying each outcome by its probability, we find the expected value. So

[tex]E = \frac{2}{9}*6 + \frac{3}{9}*2 - \frac{4}{9}*4 = \frac{12 + 6 - 16}{9} = \frac{2}{9} = 0.2222[/tex]

The expected value of X is $0.2222.

A saleswoman earns a 30% commission on all the merchandise that she sells. Last month she sold $400 worth of merchandise. How much commission (in dollars) did she earn last month?

Answers

Answer:

$270

Step-by-step explanation:

Answer:

$120.00

Step-by-step explanation:

She earned $120 because 30% of 400 is 120.

Sorry if I'm wrong.

Please mark me as Brainliest.

Someone please help me and explain it in simple words please and thank you.

Answers

Answer:

if you have a calculator above ti 84 you can enter integrals by pressing alpha window and selecting the integral option other than that it is not simple on paper you should look up a vid but it will take at least 15 mins to learn

alt optio. is to use wolfram alpha it works great you just input your problem

2x^2=4+6x
Show your work please

Answers

Answer: x = 3 - sqrt 17 / 2 , x = 3 + sqrt 17 / 2

Step-by-step explanation:

2x^2 = 4 + 6x

divide both sides by 2

x^2 = 2 + 3x

move expression to the left

x^2 - 2 - 3x = 0

reorder the terms

x^2 - 3x - 2 = 0

use the quadratic formula

x = - (-3) +- sqrt (-3)^2 - 4 x (-2) / 2 x 1

calculate

x = 3 +- sqrt 17 / 2

answer

x = 3 - sqrt 17 / 2 , x = 3 + sqrt 17 / 2

The green arcs show a pair of SAME SIDE INTERIOR ANGLES.

Drag the two black points to show another pair.

Same side interior angles are:
Always congruent
Sometimes congruent
Never congruent
Explain your thinking.

Answers

It would be purple and green

I’ll give brainliest

Answers

The answer is 148 Degrees, Step by Step Below:

Opposite: 90 - 58 = 32

180 - 32 = 148

Please Rate Helpful & Or Brainlyest! Hope this helped!

Answer:

oh delete my answer ;-;

Step-by-step explanation:

According to the graph on your graphing tool, what is true about f(x)= x^4-4x^2+x/-2x^4+18x^2

Answers

Answer:

I can't see the options, so i will find all the asymptotes.

We have the function:

[tex]f(x) = \frac{x^4 - 4*x^2 + x}{-2*x^4 + 18*x^2}[/tex]

First, we can graph this using a graphing tool, the graph can be seen below.

In the graph, we can see that when we approach x = 0 from the left, f(x) goes to negative infinity, while if we approach x = 0 from the right, f(x) goes to infinity.

This can be written as:

[tex]\lim_{x \to 0_-} f(x) = - \infty \\[/tex]

and:

[tex]\lim_{x \to 0_+} f(x) = + \infty \\[/tex]

A similar thing can be seen at x = 3, when we approach from the left f(x) goes to infinity, while if we approach from the left, f(x) goes to negative infinity.

Then:

[tex]\lim_{x \to 3_-} f(x) = \infty \\\\\lim_{x \to 3_+} f(x) = - \infty \\[/tex]

For x = -3 we can see that when we approach from the left, f(x) goes to negative infinity, while if we approach from the right, f(x) goes to infinity.

Then:

[tex]\lim_{x \to -3_-} f(x) = - \infty \\\\\lim_{x \to -3_+} f(x) = + \infty \\[/tex]

We also can see that as x goes to negative infinity or positive infinity, f(x) tends to -0.5

Then:

[tex]\lim_{x \to \infty} f(x) = -0.5 \\ \lim_{x \to -\infty} f(x) = -0.5[/tex]

So you need to check the options that match with some of the given tendencies.

Answer:

b,c,d

Step-by-step explanation:

edg 21 ^u^

Which of the following names of geometric objects does The order of letters not matter

Answers

9514 1404 393

Answer:

  B.  line AB

Step-by-step explanation:

The terminal point must be named first when naming a ray.

The vertex must be named in the middle when naming an angle.

The order of points does not matter when naming a line.

PLEASE HELP ME ANSWER!!!

Answers

Answer:

61.3°

Step-by-step explanation:

For angle x, 12 is the adjacent leg. 25 is the hypotenuse.

The trig ratio that relates the adjacent leg and the hypotenuse is the cosine.

cos A = adj/hyp

cos x = 12/25

x = cos^-1 12/25

x = 61.3°

The population of Linton is 12 times as great
as the population of Ellmore.
The combined
population of both towns
is 9,646 people. What
the population of Linton

Answers

Answer:

8904 People

Step-by-step explanation:

We start by the equation L = 12E, where L represents the population of Linton and E represents the population of Ellmore. We then set L + E = 9646, but since L = 12E, we then get 12E + E = 9636, or 13E = 9646. Therefore, E = 742. L = 12E, so L = 8904.



The sum of two numbers is 90. The difference of the two numbers is 34. What are the two numbers.

Answers

Answer:

part a: 45

part b: 102 and 68

Step-by-step explanation:

The wholesale price of an X-BOX-X is $400.00 .It was then marked up 30% and sold online. What is the online price?

Answers

Answer:

$520

Step-by-step explanation:

1% of x is x times 0.01.

that means 10%of x is x times 0.1.

400 times 0.1 is 40.

40 is 10% of 400.

it was marked up by 30% so we need to times by 3.

40 times 3 is 120.

it was marked up so its addition.

400+120=520

Of segments CDF and CED, which of the segments has a greater area based on the given information? Justify with your work.(Do not use sin)

Circle A has radius 10m and m angle CAD=90 degrees
Circle B has radius 12m and m angle CBD=60degrees

Answers

Answer:

Segment CED has greater area

Step-by-step explanation:

Circle A

Area of ΔCAD, right triangle:

A = 1/2*10*10 = 50 m²

Area of the sector CAD:

A = 1/4*π*10² = 78.54 m²

Area of segment CED:

A = 78.54 - 50 = 28.54 m²Circle B

Area of ΔCBD, equilateral triangle:

A = √3/4*12² = 62.36 m²

Area of sector CBD:

A = 1/6*π*12² = 75.40 m²

Area of segment CFD:

A = 75.40 - 62.36 = 13.04 m²

Compare the areas of the segments:

CED = 28.54  > CFD = 13.04

Answer:

for 1 st

area of segment CAD=90/360×π×10²=78.54m²

for second

area of segmentBCD=60/360×π×12²=75.4m²

so

CAD has greater area

help please, asap. i need this done

Answers

Answer:

30

Step-by-step explanation:

24/4=6

42/7=6

6 x 5=30

Trying this one more time someone please hel

Answers

Answer:

G

Step-by-step explanation:

Select G, it does not show ratio of students to teachers is 13:3.

3s=13t means 3 students to 13 teachers

Express the tangent of angle U as a ratio of the given side lengths.

Answers

Answer:

Option c ==> 5/12 is the answer

26.5 multiplied by 0.38

Answers

10.07 would be the answer

Answer:

10.07

Step-by-step explanation:

26.5 x 0.38 = 10.07

Can I get brainliest

plzzz help will
mark the brainliest!!

Answers

9514 1404 393

Answer:

  x = 10

Step-by-step explanation:

In a parallelogram, adjacent angles are supplementary.

  (9x +15) +(6x +15) = 180

  15x +30 = 180 . . . . . . . . . . simplify

  15x = 150 . . . . . . . . . subtract 30

  x = 10 . . . . . . . . divide by 15

6.If Addison types at a constant rate of 2 pages per hour, how many hours will it take to
type a paper that is 5 pages long?Immersive Reader
(20 Points)

0.4 hour

2.5 hours

5 hours

10 hours

Answers

Answer:

2.5 hours

Step-by-step explanation

it takes 1/2 a hour to write one page so do

5 x 1/2 which is 2.5 since there are 5 pages

PLEASE HELP ASAP!!!!!!!

Answers

Answer:

the wrong one is the last one

Step-by-step explanation:

because 9 times 40 doesnt = 350 it equals 360

The last one is wrong

HELP ME PLS I NEED HELP ALSO I NEED A SHOW YOUR WORK BUT PLS HELP

Answers

Step-by-step explanation:

6 y = mx + b

7. m

8. b

9a m = 4 (slope), b = 12(yintercept)

9b -1. 4

9c 8. 21

9d 12. 9

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