Use appropriate identities to rewrite the following expression in terms containing only first powers ofsine.4tanx1 + tan2x

Use Appropriate Identities To Rewrite The Following Expression In Terms Containing Only First Powers

Answers

Answer 1

The given question is

[tex]\frac{4\tan x}{1+\tan ^2x}[/tex]

Use the identity

[tex]1+\tan ^2x=\sec ^2x[/tex]

Then replace the denominator by sec^2 (x)

[tex]\frac{4\tan x}{\sec ^2x}[/tex]

Since sec is the reciprocal of cos, then

[tex]\sec ^2x=\frac{1}{\cos ^2x}[/tex]

Replce sec^2(x) by 1/cos^2(x)

[tex]\frac{4\tan x}{\frac{1}{\cos ^2x}}[/tex]

Since denominator of denominator will be a numerator

[tex]4\tan x\times\cos ^2x[/tex]

Use the value of tan

[tex]\tan x=\frac{\sin x}{\cos x}[/tex]

Replace tan by sin/cos

[tex]4\times\frac{\sin x}{\cos x}\times\cos ^2x[/tex]

Reduce cos(x) up with cos(x) down

[tex]\begin{gathered} 4\times\sin x\times\cos x= \\ 4\sin x\cos x \end{gathered}[/tex]

Use the identity

[tex]\sin (2x)=2\sin x\cos x[/tex][tex]4\sin x\cos x=2(2\sin x\cos x)[/tex]

Replace 2 sin(x)cos(x) by sin(2x)

[tex]2(2\sin x\cos x)=2\sin 2x[/tex]

The answer is

2 sin(2x)


Related Questions

I solved the attached equation as 7000 but it seems to ask for a “solution set” did I answer properly?

Answers

[tex]\begin{gathered} 0.12y+0.04(y+8000)=1440 \\ 0.12y+0.04y+320=1440 \\ 0.16y=1440-320 \\ 0.16y=1120 \\ y=\frac{1120}{0.16} \\ y=7000 \end{gathered}[/tex]

The solution set does have only one element: {7000}

Find the midpoint for the line segment whose endpoints are (-10,11) and (-1,-15).

Answers

[tex]\begin{gathered} \text{the midpoint of a line segment with endpoints } \\ (x_1,y_1)\text{ and }(x_2,y_2)\text{ } \\ \text{has coordinates} \\ (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2}) \\ \\ So,\text{ if our points are (-10,11) and (-1,-15) then the midpoint is} \\ (\frac{-10+(-1)}{2},\frac{11+(-15)}{2})=(\frac{-11}{2},-\frac{4}{2}) \\ \\ \text{the midpoint is then } \\ (\frac{-11}{2},-2) \end{gathered}[/tex]

Answer:

( -11/2, -2)

Step-by-step explanation:

Finding the midpoint

To find the x coordinate of the midpoint, add the x coordinates of the endpoints and then divide by 2

(-10+-1)/2 = -11/2

To find the y coordinate of the midpoint, add the y coordinates of the endpoints and then divide by 2

(11+-15)/2 = -4/2 = -2

The  mid point is ( -11/2, -2)

How do you solve letter b using a subtraction equation with one variable that has a solution of 2/3. A step by step guide would be helpful.

Answers

Let's set x as the variable that has a solution of 2/3.

A possible equation is:

[tex]1-x=y[/tex]

Now, in order to know the y-value, replace the x-value=2/3 and solve for y:

[tex]\begin{gathered} 1-\frac{2}{3}=y \\ we\text{ can replace 1 by 1/1} \\ \frac{1}{1}-\frac{2}{3}=y \\ \text{The subtraction of fractions can be solved as} \\ \frac{1\times3-1\times2}{1\times3}=y \\ \frac{3-2}{3}=y \\ \frac{1}{3}=y \end{gathered}[/tex]

Now, replace the y-value in the initial equation, and we obtain:

[tex]1-x=\frac{1}{3}[/tex]

If you solve this equation, you will get x=2/3.

Hi, I always have a hard time with these, the whole question is in the picture.

Answers

we have that

x1 ----> number of cars with a 7,000 gal capacity

x2 ---> number of cats with a 14,000 gal capacity

x3 ---> number of cars with a 28,000 gal capacity

so

7000x1+14000x2+28000x3=462000

using a 3x3 system of equations solver

the solution is

x1=-2s-4t+66

x2=s

x3=t

The answer is option B

Use the functions f(x) = 8x + 11 and g(x) = 4x² + 7x - 2 to evaluate the following:a. f(8) =b. f(-8)=c. g(6) =d. g(-7)=e. g(a) =

Answers

Given:

f(x) = 8x + 11

g(x) = 4x² + 7x - 2

We are asked to evaluate using the following:

(a) f(8)

f(8) = 8(8) + 11

f(8) = 64 + 11

f(8) = 75

(b) f(-8)

f(-8) = 8(-8) + 11

f(-8) = -64 + 11

f(-8) = -53

(c) g(6)

g(6) = 4(6)² + 7(6) - 2

g(6) = 4(36) + 42 - 2

g(6) = 144 + 42 - 2

g(6) = 184

(d) g(-7)

g(-7) = 4(-7)² + 7(-7) - 2

g(-7) = 4(49) - 49 - 2

g(-7) = 196 - 49 - 2

g(-7) = 145

(e) g(a)

g(a) = 4(a)² + 7(a) - 2

g(a) = 4a² + 7a - 2

For each set of three side lengths in the table, determine how many unique triangles can be formed. Select the appropriate circle in each row.

Answers

The first one the 3 sides are equal to 1, this mean that it is a equilater triangle, so it is possible to made exactly one unique triangle.

now for the other triangles we will add the two shortest sides of the triangle, and if they are more than the greater side of the triangle, then it will be a unique triangle, if not there will be more than one triangle

for the second one:

[tex]3+4=7>5[/tex]

so the second one have exactly one unique triangle.

for the number 3:

[tex]5+10=15=15[/tex]

So in this case there is none unique triangles.

for the number 4:

[tex]6+16=22<26[/tex]

So in this case there is none unique triangles.

and for the number 5:

[tex]10+50=60>55[/tex]

So we hace exactly one unique triangle.

Here is a list of questions about the students and teachers at a school. Select the questions that are statistical questions.

Answers

As observed, all the questions in the list can be answered on the basis of some data collection and analysis.

So they all can be considered as statistical questions.

Thus, all the questions in the given list are statistical questions.

1.

If you have to answer the question for most popular lunch choice, you have to collect data of the lunch choices by a large portion of the called population. Then the lunch choice corresponding to highest frequency will be considered as the most popular lunch choice. Since the conclusion is data driven, this is a statistical question.

2.

In order to answer the question, you need to collect the information about the name of school each of the called population is admitted to. If all the students are found to be admitted to the same school, then the name of that school would be the answer.

Here also, the conclusion is data driven, so this is also a statistical question.

3.

To answer this question, you have to gather all the teaching staff of the school, and take individual answers to which subject they teach. The number of teachers who answered math will be the answer for this question.

Here also, the conclusion is data driven, so this is also a statistical question.

4.

To answer this question, you have to gather the individual age of each teacher in the school. The age corresponding to the maximum frequency would be the answer to this question.

Here also, the conclusion is data driven, so this is also a statistical question.

5.

To answer this question, you have to collect data about how much sleep each student gets in the school. Then only you can answer this question.

Since the conclusion is data driven, this is a statistical question.

6.

To answer this question, you have to collect data that how many students travel by which mode of transport to travel from home to school. The mode corresponding to highest frequency is the answer to this question.

Here also, the conclusion is data driven, so this is also a statistical question.

Thus, it is seen that all the six questions are statistical questions.

What is the intermediate step in the form (x+a)^2=b(x+a)
2
=b as a result of completing the square for the following equation?
x^2+6x+19=4x

Answers

The intermediate step in the form (x + a)² = b when you solve the given quadratic equation by using completing the square method is (x + (√3 - 2)/2)² = 77/4.

The standard form of a quadratic equation.

In Mathematics, the standard form of a quadratic equation is given by:

ax² + bx + c = 0.

In this exercise, you're required to determine the intermediate step in the form (x + a)² = b when you solve the given quadratic equation by using completing the square method. Therefore, we would re-write the quadratic equation by subtracting 19 from both sides as follows:

x² + 6x + 19 = 4x

x² + 6x + 19 - 19 = 4x - 19

x² + 6x = 4x - 19

x² + 6x - 4x = 19

x² + 2x = 19

In order to complete the square, we would have to add (half the coefficient of the x- term)² to both sides of the quadratic equation as follows:

x² + 2x + (1/2)² = 19 + (1/2)²

x² + 2x + 1/4 = 19 + 1/4

(x + (√3 - 2)/2)² = 77/4

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Complete Question:

What is the intermediate step in the form (x + a)² = b as a result of completing the square for the following equation?

x² + 6x + 19 = 4x

I'm graphing and I need to find out how mutch it costs for 4.5 inches of the construction. and the construction is $25.50 per inch

Answers

You have to determine the cost for 4.5 inches of the construction using the graph.

The height is on the y-axis, and the cost is on the x-axis.

First, locate 4.5 in the y-axis, which is the value in the midpoint between 4 and 5.

Draw a horizontal line until you intersect with the line, then draw a vertical line from the function until the x-axis:

The line crosses the x-axis at the midpoint between values 102 and 127.5 to determine the value at this point you have to average both costs:

[tex]\frac{127.5+102}{2}=\frac{229.5}{2}=114.75[/tex]

The cost of 4.5 inches of construction is $114.5

The price of Stock A at 9 A.M. was ​$15.21. Since​ then, the price has been increasing at the rate of ​$0.07 each hour. At noon the price of Stock B was ​$15.96. It begins to decrease at the rate of ​$0.15 each hour. If the two rates​ continue, in how many hours will the prices of the two stocks be the​ same?

Answers

The price of the two stocks will be same in 1 hours .

in the question ,

it is given that

the price of the stock A at 9 A.M is $15.21

price increases at the rate of 0.07 each hour .

so the price of the stock A at 12 P.M. is 15.21 + 0.21 = $15.42

and the price of the stock A after x hours from 12 P.M. is given by the equation

stock A = 15.42 + 0.07(x)

the price of stock B at 12 P.M. is $15.96

price decreases at the rate of 0.15 each hour .

the price of the stock B after x hours from 12  P.M. is given by the equation

stock B = 15.96 - 0.15(x)

since the price of the two stocks is same , we equate both the equations .

15.42 + 0.07(x) = 15.96 - 0.15(x)

15.42 + 0.07x = 15.96 - 0.15x

0.15x + 0.07x = 15.42 - 15.21

0.22x = 0.21

x = 0.9545

x ≈ 1

Therefore , The price of the two stocks will be same in 1 hours .

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find the coordinates of point P that lies on the line segment MQ, M(-9,-5) , Q(3,5), and partitions the segment at a ratio of 2 to 5

Answers

[tex]\begin{gathered} Th\text{e point P are,} \\ \lbrack-9+\frac{2}{7}(3+9),-5+\frac{2}{7}(5+5)\rbrack \\ \lbrack-9+\frac{24}{7},-5+\frac{20}{7}\rbrack \\ \lbrack-\frac{39}{7},-\frac{15}{7}\rbrack \end{gathered}[/tex]

Using the origin as the center of dilation and a scale factor of k=1/2 find the coordinates of the vertices of the image of the polygon below

Answers

Given

Using the scale of 1/2

This means we divide each coordinate by 2

[tex]\begin{gathered} (0,3)=(0,1.5) \\ (-4,0)=(-2,0) \\ (2,0)=(1,0) \\ (0,-3)=(0,-1.5)_{} \end{gathered}[/tex]

Fill in each blanks so that the resulting statement is true

Answers

The next step is to subtract -21x from 9x, which obtains 30x.

Then bring down -2 and form the new dividend 30x - 2

Explanation:

Given:

[tex]\frac{9x^2+9x\text{ - 2}}{3x\text{ - 7}}[/tex]

To determine the next step in the division, we need to solve the long division:

From our calculation, we subtract -21x from +9x and this gives 30x. We bring down -2 to combine with 30x. The result is 30x - 2

The next step is to subtract -21x from 9x, which obtains 30x.

Then bring down -2 and form the new dividend 30x - 2

Sofia ordered sushi for a company meeting. They change plans and increase how many people
will be at the meeting, so they need at least 100 pieces of sushi in total.
Sofia had already ordered and paid for 24 pieces of sushi, so she needs to order additional sushi.
The sushi comes in rolls, and each roll contains 12 pieces and costs $8.
Let R represent the number of additional rolls that Sofia orders.
1) Which inequality describes this scenario?
Choose 1 answer:
B
12 + 24R ≤ 100
12+24R 100
24+12R 100
24+12R 100

Answers

Answer:

24 + 12R ≥ 100

Step-by-step explanation:

List the conditions as per question:

Number of pieces of sushi ordered = 24,Number of pieces required in total at least 100,Number of rolls to be ordered = R,Each roll contains = 12 pieces.

Inequality to represent the total number of pieces of sushi is:

24 pieces and R rolls of 12 pieces to get at least 100 pieces, or 24 + 12R ≥ 100

Write a word problem to fit the following rates: 72 tokens/12 games, ◾️ tokens/10 games

Answers

We have to write a word problem using,

• 72 tokens/12 games

,

• tokens/10 games

We can first give an information related to 72 tokens PER 12 games.

Then we can ask "how many tokens" per 10 games.

Let us devise a word problem.

The local game center sells tokens to play online games. Jeremy used 72 token to play 12 online games. At this rate, how many token would Jeremy use to play 10 online games?

The above problem uses both the information provided.

am I correct? Somone please help

Answers

Answer:

Step-by-step explanation:

7/5 = 1.4

15/10 = 1.5

so 7/5 is not equal to 15/10

the good answer is ≠

Growing up, Mrs. Reeder's favorite book was THE ADVENTURES of TOM SAWYER.Now that she is a teacher, she buys 25 copies to read with her class. If each book coast $7.19, how much does Mrs. Reeder spend?

Answers

According to the given data we have the following:

Total copies she buys= 25 copies

book cost=$7.19

Therefore, in order to calculate the amount of money that Mrs. Reeder spend we would have to make the following calculation:

Amount of money that Mrs. Reeder spend= quantity of copies * book cost

Amount of money that Mrs. Reeder spend=25 copies*$7.19

Amount of money that Mrs. Reeder spend=$180

The amount of money that Mrs. Reeder spend was $180

during happy hour appetizers are at 30% off how much would each appetize your cost show the original price your math and discounted price

Answers

EXPLANATION

Let's see the facts:

Appetizers = 30%

The discount price is given by the following equation:

Discount percentage=

Could you send me a screenshot of the question for better understanding, please?

Triangle FGH is similar to triangle IJK. Find the measure of side JK. Round youranswer to the nearest tenth if necessary.

Answers

Let x be the measure of JK so we get that

[tex]\frac{23}{5}=\frac{x}{3.5}\rightarrow x=3.5\cdot\frac{23}{5}=16.1[/tex]

(h) through (5,0), y-intercepto 0

Answers

We first need to calculate the slope of the line.

m=(0-0)/(5-0)=0 since the slope is equal to zero we have that the line is horizontal.Then the equation is

[tex](y-0)=0(x-0)\Rightarrow y=0[/tex]

the equation is y=0

given the tableau, circle the pivot and explain how you found it

Answers

The equations are

[tex]2x_1+3x_2+6x_3+S_2=22[/tex][tex]3x_1+5x_2+3x_3+S_1=20_{}[/tex][tex]-3x_2-1x_3+S_1+Z\text{ = 24}[/tex]

The smallest negative number is the pivot column

so the smallest negative number is -3 and hence the pivot column is

3

5

-3

The row pivot hence = 5

so pivot will be (x= -3 and S = 5)

Which statement describes how the reasonable domain
compares to the mathematical domain?

Answers

A statement which best describes how the reasonable domain compares to the mathematical domain is that: C. the mathematical domain includes all real numbers, while the reasonable domain includes only real numbers greater than 2.

What is a domain?

In Mathematics, a domain can be defined as the set of all real numbers for which a particular function is defined. This ultimately implies that, a domain is the set of all possible input numerical values or numbers to a function and the domain of any graph comprises all the input numerical values or numbers which are primarily shown on the x-axis.

Next, we would evaluate the function which represents the perimeter of this rectangle by substituting the value of 2 as follows:

f(w) = 6w – 8

f(2) = 6(2) – 8

f(2) = 12 – 8

f(2) = 4.

For the length of this rectangle, we have:

Length = 2w - 4

Length = 2(2) - 4

Length = 4 - 4

Length = 0

Therefore, the width of this rectangle must be real numbers that are greater than 2.

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Complete Question:

A rectangle has a length that is equal to 4 less than twice the width. The function for the perimeter depending on the width can be expressed with the function f(w) = 6w – 8, where w is the width of the rectangle in centimeters.

Which statement describes how the reasonable domain compares to the mathematical domain?

Both the mathematical and reasonable domains include only positive real numbers.

Both the mathematical and reasonable domains include only positive whole numbers.

The mathematical domain includes all real numbers, while the reasonable domain includes only real numbers greater than 2.

The mathematical domain includes all real numbers, while the reasonable domain includes only whole numbers greater than 2.

you are running a fuel economy study. one of the cars you find where blue

Answers

Answer:

Explanation:

For Blue Car:

Distance = 33 & 1/2 miles

Gasoline = 1 & 1/4 gallons

For Red Car:

Distance = 22 & 2/5 miles

Gasoline = 4/5 gallon

To determine the rate unit rate for miles per gallon for each car, we use the following formula:

[tex]Unit\text{ Rate = }\frac{\text{Distance}}{\text{Gasoline consumption}}[/tex]

First, we find the unit rate for blue car:

[tex]\begin{gathered} \text{Unit Rate=}\frac{33\text{ }\frac{1}{2}\text{ miles}}{1\text{ }\frac{1}{4}\text{ gallons}} \\ \end{gathered}[/tex]

Convert mixed numbers to improper fractions: 33 & 1/2 = 67/2 and 1 & 1/4 = 5/4

[tex]\begin{gathered} \text{Unit Rate = }\frac{\frac{67}{2}}{\frac{5}{4}} \\ \text{Simplify and rearrange:} \\ =\frac{67(4)}{2(5)} \\ \text{Calculate} \\ =\frac{134\text{ miles}}{5\text{ gallon}}\text{ } \\ or\text{ }26.8\text{ miles/gallon} \end{gathered}[/tex]

Next, we find the unit rate for red car:

[tex]\begin{gathered} \text{Unit Rate = }\frac{22\frac{2}{5}}{\frac{4}{5}} \\ \text{Simplify and rearrange} \\ =\frac{\frac{112}{5}}{\frac{4}{5}} \\ =\frac{112(5)}{5(4)} \\ \text{Calculate} \\ =28\text{ miles/gallon} \end{gathered}[/tex]

Therefore, the car that could travel the greater distance on 1 gallon of gasoline is the red car.

Write a equation that passes through the points (2,5) (-3,5)

Answers

Line equation: y = 5

Slope: 0

Intercept: 5

Formule:

. Equation : y = mx + b

. Slope: m = () / ()

es26. Name the relationship between the anglesand solve for x.12x + 417x + 2

Answers

From the given figure, we can see that the angle (12x+4) and the angle (17x+2) lie on the same straight line.

Theerfore, they are supplimentary to each other.

Please answer part a and b questions are in the picture

Answers

Part A

we have that

A(4) ----> looking at the graph

A(4) means----> population in the year 1994

so

A(4)----> less than 2 million

and

B(4) -----> greater than 2 million

therefore

the answer Part a is option B

Part B

there is only one value of t where A(t)=B(t)

the value of t is 6 (the year 1996)

An ice cream truck began its daily route with 95 gallons of ice cream. The truck driver sold 58% of the ice cream. How many gallons of ice cream were sold? round to nearest gallon

Answers

Start making the percentage as a fraction

[tex]\begin{gathered} 58\text{\%}=\frac{58}{100} \\ \end{gathered}[/tex]

multiply the fraction by the total of the daily routine

[tex]95\cdot\frac{58}{100}=55.1\approx55gallons[/tex]

What is the equation of the line that passes through the point (8,-6) and has a
slope of o?

Answers

A slope of 0 means the line is horizontal and every point on the line has the same value of y
The equation is y = -6

In AUVW, VW = UV and mZU = 74º. Find mZV.

Answers

We will find the measure of angle V as follows:

*From theorem we have that angles that are opposite to congruent sides are congruent. So, Angle W will also have a measure o 74°. Now, we also have that the sum of all internal angles of a triangle add 180°, so the following is true:

[tex]U+V+W=180\Rightarrow74+V+74=180[/tex]

Now, we solve for V:

[tex]\Rightarrow V=32[/tex]

So, the measure of angle V is 32°.

Graph the inequality on a number line

Answers

Here you go!
Hope this helps :)
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