Simplify the expression using trigonometric identities:

Simplify The Expression Using Trigonometric Identities:

Answers

Answer 1

Answer

D. 2 sinx / (1-cos x)

Step-by-step explanation:

\(\frac{sec x*sin(-x)+tan (-x)}{1+sec(-x)} \\=\frac{\frac{1}{cos x}*(-sin x)-\frac{sin x}{cos x} }{1-\frac{1}{cos x} }\\=\frac{-sin x-sin x}{cos x -1} \\=\frac{-2sin x}{cos x -1} \\=\frac{2sin x}{1-cos x}\)


Related Questions

Determine the measure of the third angle in a triangle when the other two angles total 165 degrees.

Answers

Answer:

15

Step-by-step explanation:

180-15

Hello!

the sum of the angles in the triangle = 180°

so the 3rd angle = 180° - 165° = 15°

The answer is 15°

4. Ethan and Caden share a reward of $50 in a ratio of 3:2. How much does Ethan get?

Answers

Ethan gets $30.
3:2 = 30:20

At LaGuardia Airport for a certain nightly flight, the probability that it will rain is 0.07 and the probability that the flight will be delayed is 0.18. The probability that it will not rain and the flight will leave on time is 0.8. What is the probability that it is raining if the flight has been delayed? Round your answer to the nearest thousandth.

Answers

The probability that it is raining if the flight has been delayed is 0.07, or 7%.

How to calculate the probability

We can use the following formula to calculate the probability that it is raining if the flight has been delayed:

P(Rain|Delayed) = P(Rain and Delayed) / P(Delayed)

We are given that P(Rain) = 0.07 and P(Delayed) = 0.18. We can also use the fact that P(Rain and Delayed) = P(Rain) * P(Delayed):

= 0.07 * 0.18

= 0.0126.

Substituting these values into the formula, we get:

P(Rain|Delayed) = 0.0126 / 0.18 = 0.07

Therefore, the probability that it is raining if the flight has been delayed is 0.07, or 7%.

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A curve has equation y = f(x). (a) Write an expression for the slope of the secant line through the points P(2, f(2)) and Q(x, f(x)). x − 2 f(x) − f(2) f(2) − 2 f(x) − x f(x) − x f(2) − 2 f(x) − f(2) x − 2 (b) Write an expression for the slope of the tangent line at P. lim x→0 f(x) − f(2) x − 2 lim x→2 x − 2 f(x) − f(2) lim x→2 f(x) − f(2) x − 2 lim x→0 f(x) − x f(2) − 2

Answers

The answer is the expression point giving at the right angle of the answe

EU ons
Question 5 of 25
The lines graphed below are parallel. The slope of the red line is - What is
the slope of the green line?
m-
O A -
B. -3
och
O D. /

Answers

Answer:

B. -3

your question isn't clear

A researcher compared the heights and shoe sizes for 50 men, selected at random. The equation shown describes a line of best fit for the data, where x is the shoe size and y is the height, in inches. Based on the equation, what is the approximate shoe size for a man having a height of 60 inches

Answers

Answer:

7 1/2

Step-by-step explanation:

Convert 7 1/2 to a decimal then multiply it by 1.6 to get 12.00 then add 48 to get 60.

P.S i got it right

(Help asap)
What is the area of the composite figure?

(Help asap)What is the area of the composite figure?

Answers

Answer:

111m²

Step-by-step explanation:

area = (12*3) + (15*3) +´(5*6)

        = 36 + 45 + 30

         = 111m²

Answer: 111 m²

Ok done. Thank to me :>

(Help asap)What is the area of the composite figure?

Could i get an explanation with that answer, thanks :)

Could i get an explanation with that answer, thanks :)

Answers

The total cash due at signing is $3399. The solution has been obtained by using arithmetic operations.

What are arithmetic operations?

The four fundamental operations, often known as "arithmetic operations," are said by mathematicians to be able to describe all real numbers. Divide, multiply, add, and subtract are the four mathematical operations that, respectively, result in quotient, product, sum, and difference.

We are given lease terms at the local dealership as

Length of lease = 36 months

MSRP of the car = $22,500

Purchase value of the car after lease = $17,500

Down payment = $1999

Monthly payment = $425

$475 security deposit

$500 acquisition fee

Now, the total cash due at signing (including the first monthly payment) is as follows:

$1999 + $425 + $475 + $500 = $3399

Hence, the total cash due at signing is $3399.

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Question 2
On holiday you change £350 into Dollars and receive $588
If you used these Dollars to buy a gift for $126, how much does the gift cost in pounds?

Answers

The cost of the gift in the pounds is a 107.10 Pounds.

According to the statement

we have to find the cost of the gift in the pounds.

So, For this purpose, we know that the

The pound is the main unit of sterling, and the currency itself may be referred to by the compound noun pound sterling or the term British pound.

From the given information:

you change 350 pounds into dollars and get 588 dollars.

And the price of gift in dollars is a 126.

We know that the

1 Pound sterling equals to the 1.68 United States Dollar

it means

350 pounds in dollars = 1.68 *350

350 pounds in dollars = 588 dollars

And according to this

1 dollar = 0.85 pounds

So,

126 dollars into pounds = 126*0.85

126 dollars into pounds = 107.10 Pounds.

So, The cost of the gift in the pounds is a 107.10 Pounds.

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Nikita bought a flat for rupees 4987653. Round off the price of the flat to the nearest thousands. ​

Answers

If you round to the nearest thousands then it would be 4988000.

i need help with this

Subtract 8y^2-5y+7 from 2y^2+7y+11​

Answers

Answer:

6\(y^{2}\) - 12\(y\) - 4

Step-by-step explanation:

(8\(y^{2}\) - 5\(y\) + 7) - (2

8 - 2 = 6

-5 - 7 = -12

7 - 11 = -4

6\(y^{2}\) - 12\(y\) -4

(Nice profile pic btw!)

At a certain gas station, 40% of the customers use regular gas (A1), 35% use plus gas (A2), and 25% use premium (A3). Of those customers using regular gas, only 10% fill their tanks (event B). Of those customers using plus, 20% fill their tanks, whereas of those using premium, 30% fill their tanks.

Required:
a. What is the probability that the next customer will request plus gas and fill their tank ?
b. What is the probability that the next customer fills the tank ?
c. If the next customer fills the tank, what is the probability that the regular gas is requested?

Answers

Answer:

Remember that for an event with a percentage probability X, the probability is given by:

P = X/100%

a) What is the probability that the next customer will request plus gas and fill their tank ?

We know that 35% of the customers use plus gas, and of these using plus, 20% fill their tank.

So the probability that the next customer uses plus gas is:

p = 35%/100% = 0.35

And the probability that the customer fills the tank (given that the customer uses plus gas) is:

q = 20%/100% = 0.2

The joint probability is just the product between the individual probabilities:

Then the probability that the next customer uses plus gas and fills their tank is:

P = 0.35*0.2 = 0.07

b) What is the probability that the next customer fills the tank?

We know that 20% of the ones that use plus gas (with a probability of  0.35) fill their tank, 10% of these that use regular gas (with a probability of 0.4) and 30% of these that use premium (with a probability of 0.25) fill their tank,

Then the probability is computed in a similar way than above, here the probability is:

P = 0.2*0.35 + 0.1*0.4 + 0.3*0.25 = 0.185

The probability that the next customer fills the tank is 0.185

c)  If the next customer fills the tank, what is the probability that the regular gas is requested?

Ok, now we already know that the customer fills the tank.

The probability that a customer uses regular and fills the tank, is

p = 0.1*0.4

The probability that a customer fills the tank is computed above, this is:

P = 0.185

The probability, given that the customer fills the tank, the customer uses regular gas, is equal to the quotient between the probability that the customer fills the tank with regular and the probability that the customer fills the tank, this is:

Probability = p/P = (0.1*0.4)/(0.185) = 0.216

PLEASE HELP PLEASE PLEASEEEE TY

PLEASE HELP PLEASE PLEASEEEE TY

Answers

Answer: 120

Step-by-step explanation: To find the volume of these two combined, we must use V = s*s*s. 4 * 10 * 2 = 80, and 2 * 5 * 4 = 40, and since we are combining this together for an added volume (since it is a tower), it is 120 inches cubed.

Benny invests $960 yearly into an account that pays 8% interest, compounded
annually. Determine the amount in Benny's account after 10 years.

Answers

Answer:

$2,072.56

Step-by-step explanation:

Compound interest formula is expressed as;

A = P(1+r) ^ n

A = 960(1+0.08) ^ 10

A = 960(1.08)^10

A = 960(2.1589)

A = 2,072.56

Hence the amount in Benny's account after 10 years is $2,072.56

Find the numbers with the following property three times the sum of four and a number is less than seven times the same number

Answers

Let's represent the number with the variable "x". According to the given property, we can write the following equation:

3(x + 4) < 7x

Now, let's solve this inequality to find the range of numbers that satisfy the property.

3x + 12 < 7x

Subtract 3x from both sides:

12 < 4x

Divide both sides by 4 (since the coefficient of x is 4):

3 < x

So, the range of numbers that satisfy the given property is x > 3.

Therefore, any number greater than 3 will satisfy the condition. For example, 4, 5, 6, 7, 8, etc.Step-by-step explanation:

Let's call the number we're looking for "x".

According to the problem, we know that:

3(4 + x) < 7x

Simplifying:

12 + 3x < 7x

Subtracting 3x from both sides:

12 < 4x

Dividing both sides by 4:

3 < x

So the number we're looking for must be greater than 3.

solve for x 8/9x +4=12

Answers

hello

to solve for x, we have to simplify this equation

step one

collect like terms

\(\begin{gathered} \frac{8}{9}x+4=12 \\ \frac{8}{9}x=12-4 \\ \frac{8}{9}x=8 \\ \end{gathered}\)

step two

cross multipy both sides

\(\begin{gathered} \frac{8}{9}x=8 \\ 8x=8\times9 \\ 8x=72 \end{gathered}\)

step three

divide both sides by the coefficient of x

\(\begin{gathered} 8x=72 \\ \frac{8x}{8}=\frac{72}{8} \\ x=9 \end{gathered}\)

from the calculation above, the value of x is equal to 9

2. If there are 9 square patches on the quilt, how many circle patches are
there?
9 divide = circle patches

Answers

Answer:

5

Step-by-step explanation:

there are 5 circle patches on the quilt

Brielle’s piggy bank has all nickels and dimes. The total value of the money in her piggy bank is $7.80. If Brielle
has 66 nickels, write and solve a linear equation to find the number of dimes she has.

Answers

66*0.5=3.30

7.80-3.30=4.50

4.50/0.10=45

ANSWER: 45 dimes

Historically, the average diameter of the holes drilled has been 0.25 cm and the average range has been 0.10 cm. Samples of size 4 will be collected. For the R-chart, what is the value of upper control limit

Answers

Solution :

Given the average range of the holes drilled = 0.10 cm

The average diameter of the holes drilled = 0.25 cm

The sample size = 4

For the sample size of 4, the factor for control limit for the range (\(D_4\)) = 2.28  (From the table of constants for X-bar and R-chart)

The upper control limit for the R-chart = R-bar x \(D_4\)

                                                                = 0.10 x 2.28

                                                                = 0.228

Therefore, the answer is greater than 0.202 but less than or equal to 0.302

Since the mode is the most frequently occurring data value, it

Select one:
a. is always larger than the mean
b. can never be larger than the mean
c. must have a value of at least two
d. is always larger than the median
e. None of these answers is correct.


Any answer without justification will be rejected automatically.

Answers

The correct answer is option (e): None of these answers is correct.

The statement "the mode is the most frequently occurring data value" is true. However, none of the options provided accurately describes the relationship between the mode and the mean.

The mode and the mean are different measures of central tendency and can have different values. There is no general rule or guarantee that the mode will always be larger or smaller than the mean. The relationship between the mode and the mean depends on the specific dataset and its distribution. Therefore, none of the provided options correctly describes the relationship between the mode and the mean.

What is the surface areaof this square-basedpyramid in square yards?

What is the surface areaof this square-basedpyramid in square yards?

Answers

Given:

There is a square based pyramid given with measurments

Required:

We want to find the area of given pyramid

Explanation:

First we find the area of base which is square

\(A_1=5*5=25\text{ sq ft}\)

Now the area of sides of pyramid which is triangle

\(A_2=4*\frac{1}{2}*8*5=80\text{ sq ft}\)

Now the area of pyramid is

\(A=25+80=105\text{ sq ft}\)

now convert 105 sq ft to sq yard is

1 sq yd is 9 sq ft by this

\(A=\frac{105}{9}=11.67\text{ sq yd}\)

Final answer:

11.67 sq yard

Help me plsssssssssssss

Help me plsssssssssssss

Answers

Answer:

3/1/4

That's the expression represents Lena's speed in miles per hour

Bound
Figure 2.
Jenny would like to buy a new air conditioner for his home. As seen in Figure 2 above he has
3 types of brands that he can consider. The cash price for Daewoo is RM1,899, Daikin at a
price of RM1,699 and last choice is Mitsubishi at a price of RM1.999. He plans to make 18
monthly instalments, if he pays RM300 as a down payment for the air conditioner that he would
like to buy, find the interest charge for each brand if the interest rate is 4% based on originall
balance if he chooses to buy from Daikin, find the monthly instalment price and instalment
price that he needs to pay.

BoundFigure 2.Jenny would like to buy a new air conditioner for his home. As seen in Figure 2 above he

Answers

if Jenny chooses to buy from Daikin, the monthly installment price would be approximately RM98.89, and the total installment price to be paid would be approximately RM1,779.98 (18 monthly installments * RM98.89).

How to determine  the monthly instalment price and instalment price that Daikin needs to pay.

Calculating the loan amount for each brand by subtracting the down payment from the cash price:

Loan amount for Daewoo = RM1,899 - RM300 = RM1,599

Loan amount for Daikin = RM1,699 - RM300 = RM1,399

Loan amount for Mitsubishi = RM1,999 - RM300 = RM1,699

Calculating the interest charge for each brand:

Interest charge for Daewoo = Loan amount for Daewoo * Interest rate = RM1,599 * 0.04 = RM63.96

Interest charge for Daikin = Loan amount for Daikin * Interest rate = RM1,399 * 0.04 = RM55.96

Interest charge for Mitsubishi = Loan amount for Mitsubishi * Interest rate = RM1,699 * 0.04 = RM67.96

To find the monthly installment price, divide the total amount (cash price + interest charge) by the number of monthly installments:

Monthly installment price for Daewoo = (Cash price of Daewoo + Interest charge for Daewoo) / Number of monthly installments = (RM1,899 + RM63.96) / 18 ≈ RM107.22

Monthly installment price for Daikin = (Cash price of Daikin + Interest charge for Daikin) / Number of monthly installments = (RM1,699 + RM55.96) / 18 ≈ RM98.89

Monthly installment price for Mitsubishi = (Cash price of Mitsubishi + Interest charge for Mitsubishi) / Number of monthly installments = (RM1,999 + RM67.96) / 18 ≈ RM116.72

Therefore, if Jenny chooses to buy from Daikin, the monthly installment price would be approximately RM98.89, and the total installment price to be paid would be approximately RM1,779.98 (18 monthly installments * RM98.89).

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help please if you can. Thank you

help please if you can. Thank you

Answers

27/50 is the answer. Why? Because 54 and 100 are both divisible by 2. hope this helps

Answer:

6/11

Step-by-step explanation:

I don't know that's what my mom said

The initial population of a town is 3800​, and it grows with a doubling time of 10 years. What will the population be in ​8 years?

Please show step by step!

Answers

Answer:

The population was 3040 people in 8 years.

Step-by-step explanation:

find unit rate;

3800/10 = 380

380 x 8 = 3040

6x = 52 − 2y 5x + 7y = 70 Question 1 What is the first step when solving the given system by the elimination method?

Answers

The solution of the equations 6x = 52 − 2y and 5x + 7y = 70 by elimination method will be (7, 5).

What is the solution to the equation?

In other words, the collection of all feasible values for the parameters that satisfy the specified mathematical equation is the convenient storage of the bunch of equations.

The equations are given below.

6x = 52 - 2y

6x + 2y = 52

3x + y = 26                   ...1

5x + 7y = 70

(5/7)x + y = 10              ...2

Subtraction equation 2 from equation 1, then we have

3x - (5/7)x = 26 - 10

(16/7)x = 16

x = 7

Then the value of 'y' is given as,

3(7) + y = 26

21 + y = 26

y = 5

The solution of the equations 6x = 52 − 2y and 5x + 7y = 70 by elimination method will be (7, 5).

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Max measures the angles in a triangle.
He says the angles are 50°, 35º and 85°,
Explain why Max cannot be correct. ​

Answers

Answer:

Max cannot be correct because a triangle is made up of three angles, whose sum is 180°. Max's answers add up to 170°

Solve for b

10, b, 150degrees, 12degrees

Solve for b10, b, 150degrees, 12degrees

Answers

Hello!

We have all angles of the triangle:

We will use the law of cosines. This relation is valid for all sides of any t

We have:

angle A = 12°

côté a = 10

angle B = 150°

This is therefore the first case of application of the sine law.

So:

\(\sf \dfrac{b}{sin~B} = \dfrac{a}{sin~A}\)

\(\sf b =\dfrac{sin~B~*~a}{sin~A} = \dfrac{sin~150~*~10cm}{sin~12} = \dfrac{arcsin~0.5~*~10cm}{arcsin~0.2079116908} = \dfrac{30~*~10cm}{12} = \dfrac{300cm}{12} = \boxed{\sf25cm}\)

b = 25cm
Solve for b10, b, 150degrees, 12degrees

Tell whether the sequence is arithmetic. If it is what is the common
difference? Explain. (2 points)
{1, 5, 9, 13, ...).

Answers

Answer:

Sequence is arithmetic

Common difference = 4

Step-by-step explanation:

All arithmetic sequences have a common difference, so if you can determine a common difference in a given sequence, then the sequence is likely to be arithmetic. To find the common difference, subtract a value from its preceding value, and repeat this step to ensure the difference between all values is the same:

5 - 1 = 9 - 5 = 13 - 9

4 = 4 = 4

The common difference = 4, and because there is a common difference, this sequence is arithmetic.

K
Find the mean for the data items in the given frequency distribution.
2
3
6
5
Score, x
Frequency, f
The mean is
1
3
4
5
5
4
(Round to 3 decimal places as needed.)
6
5
7
3
8
2
Ú

KFind the mean for the data items in the given frequency distribution.2365Score, xFrequency, fThe mean

Answers

The mean for the data items in the given frequency distribution is 4.152

Calculating the mean for the data items

To find the mean of the data items in the frequency distribution, we need to use the formula:

Mean = (Sum of (xi * fi)) / (Sum of fi)

where xi is the midpoint of the class interval and fi is the corresponding frequency.

So, we have

Mean = (3 + 12 + 15 + 20 + 20 + 30 + 21 + 16)/(3 + 6 + 5 + 5 + 4 + 5 + 3 + 2)

Evaluate

Mean = 4.152

Hence, the mean is 4.152

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