What is the graph of the function rule?
y = |3x| - 1

Answers

Answer 1

Answer:

Look below

Step-by-step explanation:

What Is The Graph Of The Function Rule?y = |3x| - 1
Answer 2

Answer:

When graphed, it should look like this.

Step-by-step explanation:

The - 1 in the equation means the line penetrates the y-axis as (0, -1)

3x tells us it has a slope of 3.

What Is The Graph Of The Function Rule?y = |3x| - 1

Related Questions

can someone please help me​

can someone please help me

Answers

Answer:

800

Step-by-step explanation:

= 2 (13 x 11 + 11 x 11 + 11 x 13 )

= 2 (143 + 121 + 143)

= 2 x 407

= 814 inch^2

nearest hundred = 800

80, answer = 800 inch^2

What is the net pay for 40 hours worked at $8.95 an hour with deductions for Federal tax of $35.24, Social Security of $24.82, and other deductions of $21.33?
$276.61
$326.25
$358.00
$368.91

Answers

After deducting the amounts for Federal tax, Social Security, and other deductions, the net pay for working 40 hours at an hourly wage of $8.95 is $276.61. Option A.

To calculate the net pay, we need to subtract the deductions from the gross pay.

Given:

Hours worked = 40

Hourly wage = $8.95

Federal tax deduction = $35.24

Social Security deduction = $24.82

Other deductions = $21.33

First, let's calculate the gross pay:

Gross pay = Hours worked * Hourly wage

Gross pay = 40 * $8.95

Gross pay = $358

Next, let's calculate the total deductions:

Total deductions = Federal tax + Social Security + Other deductions

Total deductions = $35.24 + $24.82 + $21.33

Total deductions = $81.39

Finally, let's calculate the net pay:

Net pay = Gross pay - Total deductions

Net pay = $358 - $81.39

Net pay = $276.61

Therefore, the net pay for 40 hours worked at $8.95 an hour with deductions for Federal tax of $35.24, Social Security of $24.82, and other deductions of $21.33 is $276.61. SO Option A is correct.

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Note the correct and the complete question is

What is the net pay for 40 hours worked at $8.95 an hour with deductions for Federal tax of $35.24, Social Security of $24.82, and other deductions of $21.33?

A.) $276.61

B.) $326.25

C.) $358.00

D.) $368.91

You start driving west for 9 miles, turn right, and drive north for another 6 miles. At the end of driving, what is your straight line distance from your starting point? Round to the nearest tenth of a mile.

Answers

Answer:

10.8 mi

Step-by-step explanation:

Picture a right triangle with legs 9 mi and 6 mi.  Applying the Pythagorean Theorem (d² = a² + b²), we get:

(9 mi)² + (6 mi)² = 117 mi²

This is the square of the hypotenuse (the desired distance).

Taking the square root of both sides, we get d = √(117 mi) ≈ 10.8 mi = d

The desired straight line distance traveled is 10.8 mi

HELP ME FOR ALOT OF POINTS

HELP ME FOR ALOT OF POINTS

Answers

Answer:

b

Step-by-step explanation:

sorry if wrong

Answer:

the amswer is c

Step-by-step explanation:

WILL MARK BRANIEST IF ITS RIGHT PLEASE HELP ME I HAVE BEEN STUCK ON THIS QUESTION (note for the problem look at picture 1 for your answer choices look at picture 2.

WILL MARK BRANIEST IF ITS RIGHT PLEASE HELP ME I HAVE BEEN STUCK ON THIS QUESTION (note for the problem
WILL MARK BRANIEST IF ITS RIGHT PLEASE HELP ME I HAVE BEEN STUCK ON THIS QUESTION (note for the problem

Answers

Answer:

I think B is right answer

What is the system of elimination for y= -3x+5 y= -8x+25

Answers

The solution to the system of equations is: x = 10/3 and y = -5/3

To solve the system of equations by elimination, we want to eliminate one of the variables (x or y) by adding or subtracting the two equations.

In this case, we can eliminate y by multiplying the first equation by -5 and the second equation by 3, then adding them together:

-5(y = -3x+5) → -5y = 15x - 25

3(y = -8x+25) → 3y = -24x + 75

Adding the two equations gives:

-2y = -9x + 50

Now we can solve for y:

y = (9/2)x - 25

To find x, we substitute this expression for y into one of the original equations. Let's use the first equation:

y = -3x+5

(9/2)x - 25 = -3x + 5

Solving for x gives:

x = 10/3

Therefore, the solution to the system of equations is: x = 10/3 and y = -5/3

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1+sin^2-cos^x / 2sin^2x =?​

Answers

The simplified expression of 1+sin^2-cos^x / 2sin^2x  issin^2(x) / 2(1 + cos(x)) + 1 / 2(1 - cos(x))

What is the simplified expression

To simplify this expression, we can first simplify the numerator by combining the terms inside the parentheses:

1 + sin^2(x) - cos(x) = sin^2(x) + 1 - cos(x)

Next, we can factor the denominator trigonometric identity sin^2(x) + cos^2(x) = 1:

2 sin^2(x) = 2(1 - cos^2(x)) = 2 - 2cos^2(x)

Now we can substitute these simplified expressions into the original expression:

(1 + sin^2(x) - cos(x)) / (2 sin^2(x))

= (sin^2(x) + 1 - cos(x)) / (2 - 2cos^2(x))

= [(1 - cos(x)) + sin^2(x)] / [2(1 - cos(x))(1 + cos(x))]

1+sin^2-cos^x / 2sin^2x = [sin^2(x) / 2(1 + cos(x))] + [1 / 2(1 - cos(x))]

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Lily is preheating her oven before using it to bake. The initial temperature of the oven
is 75° and the temperature will increase at a rate of 15° per minute after being turned
on. What is the temperature of the oven 20 minutes after being turned on? What is
the temperature of the oven t minutes after being turned on?

Answers

Answer:

10 minuets 225

20 minuets 375

Step-by-step explanation:

Will mark brainliest! Please help I have no idea!

Will mark brainliest! Please help I have no idea!

Answers

Answer:

the decimals should line up.

Answer:

press the right arrow 3 times

Step-by-step explanation:

to properly subtract any numbers the value of the digits need to be in line

x+10,-8x -9y=-1Solve using substitution

Answers

Answer:

x +10 =0 (1)

-8x -9y=1 (2)

x=-10 => (2) 80-9y=1 =>y=9

=> x=-10, y=9

Step-by-step explanation:

A recipe for oatmeal cookies calls for 5 cups of flour for every 6 cups of oatmeal. How much flour is needed for a big batch of cookies that uses 18 cups of oatmeal?

Answers

Answer:

15

Step-by-step explanation:

So first you need to find out how many groups of 6 cups of oatmeal there are. So for this just do 18/6=3

So now you should be able to find the amount of flour by doing 5*3=15

The flour is needed for a big batch of cookies that uses 18 cups of oatmeal would be 15 cups.

What is the unitary method?

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

In order to find out how many groups of 6 cups of oatmeal there are.

So, For every 6 cups of oatmeal = 18/6=3

Now,

For 5 cups of flour = 5 x 3 = 15

The flour is needed for a big batch of cookies that uses 18 cups of oatmeal would be 15 cups.

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i need the answers to the marked answers! please help me!! :)

i need the answers to the marked answers! please help me!! :)

Answers

The results are given below.

What is congruency of triangles?

Two triangles are said to be congruent if all the corresponding sides are equal and all the corresponding angles are equal. The symbol of congruency is '≅'

Consider the first triangles,

Given, L is the midpoint of KN and MP.

To find ΔMKL ≅ΔPNL

Using side-angle-side congruency ,

Here, the corresponding sides , KM and MP, KL and LP are equivalent.

But the angle ∠L is not an included angle.

So this triangles are non congruent.

Consider the next triangles.

BD bisects ∠ABC ∠BAD≅∠BCD

To find ΔABC≅BCD

By side- side-side congruency,

The corresponding sides AB and BD, AD and DC, BD are equivalent.

Therefore this ΔABC≅BCD  proved.

Hence the proof.

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What is the square root of -1?

Answers

Step-by-step explanation:

the square root of -1 is i

i is an imaginary number =√-1

Answer:

1 is the answer

Step-by-step explanation:

Hope this helps

brainliest pls ❤️

I HAVE TO TURN THIS IN 5 MINS, PLEASE HELP ME !!!!!

The question is in the box below next to the blue x

I HAVE TO TURN THIS IN 5 MINS, PLEASE HELP ME !!!!!The question is in the box below next to the blue

Answers

Answer:

y = -1/3 x + 7

y = -1/3 x + 6

y = -1/3 x + 4

Step-by-step explanation:

All of these are parallel to the line created on the graph

Answer:

y = -1/3 x + 7

y = -1/3 x + 6

y = -1/3 x + 4

(please tell me if I'm wrong or if I missed something)

Charlie grew 3/4 of an inch on her 7th birthday. Her twin sister Lucy grew 1/2 of an inch. How much more did charlie grow more than lucy?

Answers

Answer: 1/4

Step-by-step explanation: 3/4-1/2= 1/4

Use the triangle angle-sum theorem and other angle relationships to find the missing angle measures

Use the triangle angle-sum theorem and other angle relationships to find the missing angle measures

Answers

First one is 50 degrees
(90+40+x=180)

Second is 40 by the vertical angles theorem

Finally the third one is 45

Factor 403 – 102O 2x (2x - 5)O 2. (x - 5)O 23 (223 – 10)O x (x2 – 10x)

Factor 403 102O 2x (2x - 5)O 2. (x - 5)O 23 (223 10)O x (x2 10x)

Answers

We are asked to factor out the expression:

4 x^3 - 10 x

So we extract a factor of "2" from the numerical factors "4" and "10", and also a factor of "x" from each term,leading to:

2 x ( 2 x^2 - 5)

Therefore, please select the first answer option they give you in the list.



The height of a tree sapling was 3.15 inches last year. This year, the height is 5.38 inches. How much did the height of the tree sapling increase? Find the difference.

Answers

Answer:

2.23 inches

Step-by-step explanation:

Difference means subtraction and you subtract the smaller number from the bigger number. 5.38 - 3.15 = 2.23 in.

Answer:

2.23 inches

Step-by-step explanation:

We will subtract 3.15 from 5.38 because the problem is asking for the increase. We will take the new height and subtract the old height to see the difference.

5.38 - 3.15 = 2.23 inches

Have a nice day!

  I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

HELP PLEASE
14-(-5)+12+(-18)=

Answers

Answer:

13

Step-by-step explanation:

because wothe the power of God and anime-

I think the answer is 13
Let me know if its right :)

In which two ways can a scrum master exemplify characteristics of a servant leader?

Answers

There are 10 common characteristics attributed to servant leadership: active listening, empathy, healing, awareness, persuasion, conceptualization, foresight, stewardship, commitment to the growth of people, and community-building.

How does a Scrum Master demonstrate servant leadership?

A Scrum Master is a servant-leader whose focus is on the needs of the team members and those they serve (the customer), with the goal of achieving results in line with the organization's values, principles, and business objectives.

1.  Active listening: Active listening is the practice of preparing to listen, observing what verbal and non-verbal messages are being sent.

2.  Empathy:  the ability to understand and share the feelings of another.

3.  Healing:  the process of making or becoming sound or healthy again.

4.  Awareness:  knowledge or perception of a situation or fact.

5.  Persuasion:  A belief or set of beliefs, especially religious or political ones.

6.  Conceptualization:  The action or process of forming a concept or idea of something.

7. Foresight: The ability to predict or the action of predicting what will happen or be needed in the future.

8. stewardship: The job of supervising or taking care of something, such as an organization or property.

9. Commitment: The state or quality of being dedicated to a cause, activity, etc.

10. Community-building: Community building is a field of practices directed toward the creation or enhancement of community among individuals within a regional area or with a common need or interest.

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Multiplying and Dividing Expressions with Radicals
Exercises 1–5
Simplify as much as possible.
1. √17 =
2. √510 =
3. √4x

Answers

1. Using Radicals the number √17 has a value of 4.123.

2. √510 =260100.

3. √4x = 2√x.

Simply multiply or divide the numbers at each point where it makes sense to multiply or divide a function. If the functions are specified by formulas, you can simply multiply or divide the formulas (inserting numbers before or after is irrelevant).

When multiplying or dividing, it is standard practise for the final result to contain the same number of significant figures as the number with the fewest significant figures. The division of two numbers can be calculated using the following formula: Dividend Divisor = Quotient + Remainder. The number that is being divided in this case is known as the dividend.

The number that divides the number (dividend) into equal parts is known as the divisor.

1. \(\sqrt{17}\\\) = 4.123 (The values of the number √17 is 4.123.)

2.  √510

= 510^2

=(500+10)^2

=500^2+10^2+2×500×10

=250000+100+10000

=260100.

3. √4x = 2√x.

because 4 = 2*2

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Marguerite is selling space in an advertisement book for a community fund-raising event. Each (1/5) page in the book costs $13.5. What is the cost for (3/5) page.

Answers

Answer:

$40.5.

Step-by-step explanation:

if 1/5 of the book costs $13.5. then to find 3/5 you just have to times the answer by 3.

The following table shows the mean annual percent return on capital (profitability) and the mean annual percentage sales growth for eight aerospace and defense companies.



Company Profitability Growth

Alliant Techsystems 23. 1 8. 0

Boeing 13. 2 15. 6

General Dynamics 24. 2 31. 2

Honeywell 11. 1 2. 5

L-3 Communications 10. 1 35. 4

Northrop Grunmman 10. 8 6. 0

Rockwell Collins 27. 3 8. 7

United Technologies 20. 1 3. 2


Click here for the Excel Data File


a. Compute the correlation coefficient. Conduct a test of hypothesis to determine if it is reasonable to conclude that the population correlation is greater than zero. Use the 0. 05 significance level. Assume growth is the independent variable and profitability is the dependent variable. (Negative values should be indicated by a minus sign. Round x, y values to 1 decimal place and other values to 3 decimal places. )



x y (x−x⎯⎯)

(y−y⎯⎯)

(x−x⎯⎯)2

(y−y⎯⎯)2

(x−x⎯⎯) (y−y⎯⎯)


23. 1

8. 0

5. 613

−5. 825

31. 500

33. 931

-32. 693

13. 2

15. 6

−4. 288

1. 775

18. 383

3. 151

-7. 610

24. 2

31. 2

6. 713 17. 375

45. 058

301. 891

116. 630

11. 1 2. 5

-6. 388

-11. 325

40. 800 128. 256

72. 338

10. 1

35. 4

-7. 388

21. 575

54. 575 465. 481 -159. 385

10. 8 6. 0 −6. 688

-7. 825

44. 723

61. 231

52. 330

27. 3 8. 7 9. 813 −5. 125 96. 285 26. 266 -50. 289

20. 1

3. 2

2. 613

-10. 625

6. 825

112. 891

-27. 758

139. 9

110. 6


338. 149

1133. 095

-36. 438




x⎯⎯

=

17. 488

, y⎯⎯

=

13. 825

, Sx =

6. 950



Sy =

12. 723

, r =

-0. 059



H0: rho ≤ 0; H1: rho > 0 Reject H0 if t > 1. 9432






b. Develop the regression equation for profitability based on growth. Comment on the slope value. (Negative values should be indicated by a minus sign. Round your answers to 3 decimal places. )

Answers

(A) The correlation coefficient between profitability and growth is -0.059, indicating a weak negative relationship between the two variables.

(B) The regression equation for profitability based on growth is: Profitability = 24.916 - 0.383Growth.

a. The correlation coefficient between profitability and growth is -0.059, indicating a weak negative relationship between the two variables. To test the hypothesis that the population correlation is greater than zero, we use a one-tailed t-test with a significance level of 0.05. The test statistic, calculated as t = r√((n-2)/(1-r^2)), where n is the sample size, is -0.413. Since the calculated t-value is less than the critical value of 1.9432, we fail to reject the null hypothesis and conclude that there is insufficient evidence to suggest that the population correlation between profitability and growth is greater than zero.

b. The regression equation for profitability based on growth is: Profitability = 24.916 - 0.383Growth. The negative slope value suggests that there is a negative relationship between profitability and growth, indicating that as sales growth increases, profitability decreases. However, the low R-squared value of 0.004 indicates that only 0.4% of the variability in profitability can be explained by growth, suggesting that other factors may have a greater influence on profitability for these aerospace and defense companies.

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in the united states, coins have the following thicknesses: penny, 1.551.55 mm; nickel, 1.951.95 mm; dime, 1.351.35 mm; quarter, 1.751.75 mm. if a stack of these coins is exactly 1414 mm high, how many coins are in the stack?

Answers

The coins in the stack if its height is 1414 mm and the thickness of the coins are penny 1.55 mm, nickel 1.95 mm, dime 1.35 mm, and quarter 1.75 mm is 214.

The thickness of the coins are

Penny 1.55 mm

Nickel 1.95 mm

Dime 1.35 mm

Quarter 1.75 mm

The stack which contains the given coins is 1414 mm high.

Now to find the number of coins we can divide the total thickness of the coins with the height of the given stack.

Total thickness of available coins = 1.55 + 1.95 + 1.35 + 1.75 = 6.6

The total height of stack = 1414 mm

Number of coins in the stack = 1414/6.6 = 214.24

The number of coins are 214

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Express the confidence interval 0.039

A. 0.259+0.22
B. 0.22±0.5
C. 0.259+0.5
D. 0.259+0.44

Answers

The confidence interval is 0.039. This means that the value lies between the range of -0.039 and 0.039. Therefore, we can express the confidence interval as the mean plus or minus the margin of error.

This will give us a range in which the true population mean lies.Let's assume that the mean is 0.259. Then the lower limit of the range is given by:Lower limit = 0.259 - 0.039 = 0.22 And the upper limit of the range is given by:Upper limit = 0.259 + 0.039 = 0.298Therefore, the confidence interval is: 0.22 to 0.298Now we can see that option A is the correct answer: 0.259+0.22.

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suppose you have an argument with a false conclusion. given this information, what do you know about the soundness of this argument?

Answers

If your argument leads to a misleading conclusion, it is probably unsound. It is also conceivable that the argument is sound but has a wrong premise.

If an argument has a faulty conclusion, either the premises are incorrect or the conclusion does not flow logically from the premises. This indicates that the reasoning is flawed.

An argument is deemed sound if all of its premises are true and it is valid (that is, the conclusion flows logically from the premises). Whether or not the conclusion is correct, the argument is flawed if any of the premises are untrue.

As a result, if your argument leads to a misleading conclusion, it is probably unsound. It is also conceivable that the argument is sound but has a wrong premise, in which case it is invalid.

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Need help with this question.

it is about complex numbers. WIll mark brainliest to the best answer. Thank you

Need help with this question. it is about complex numbers. WIll mark brainliest to the best answer. Thank

Answers

The value of m for the complex number to be purely real are 3 and -5.

The value of m for the complex number to be purely imaginary are -2 and 3.

For the complex number to be located in the second quadrant, the value of m must be less than -3 and 5.

Given the complex number:

\(z=\frac{m^2-m-6}{m+3}+(m^2-2m-15)i\)

a) For the complex number to be purely real, then the imaginary part of the complex number must be zero that is:

\((m^2-2m-15)i = 0\\m^2-2m-15=0\)

Factorize

\(m^2+5m-3m-15=0\\m(m+5)-3(m+5)=0\\(m-3)(m+5)=0\\m-3=0 \ and \ m+5=0\\m=3 \ and \ m=-5\)

Hence the value of m for the complex number to be purely real are 3 and -5.

b) For the complex number to be purely imaginary, then the real part of the complex number must be zero. Hence;

\(\frac{m^2-m-6}{m+3}=0 \\m^2-m-6=0\)

Factorize

\(m^2-m-6\\m^2-3m+2m-6=0\\m(m-3)+2(m-3)=0\\(m+2)(m-3)=0\\m+2=0 \ and \ m-3=0\\m=-2 \ and \ m = 3\)

Hence the value of m for the complex number to be purely imaginary are -2 and 3.

c) For the complex number to be in the second quadrant, then the ratio of y to x must be negative i.e less than zero as shown:

\(\frac{m^2-2m-15}{\frac{m^2-m-6}{m+3} } < 0\\ \frac{m^2-2m-15(m+3)}{{m^2-m-6} }\\ \frac{(m+3)(m-5)(m+3)}{{(m-3)(m+2)} } <0\\(m+3)(m-5)(m+3) <0\\m+3<0, m-5<0 \ and \ m+3<0\\m<-3 \ and \ m<5\)

Hence for the complex number to be located in the second quadrant, the value of m must be less than -3 and 5.

For positive acute angles AA and B,B, it is known that \tan A=\frac{28}{45}tanA= 45 28 ​ and \cos B=\frac{3}{5}.CosB= 5 3 ​ . Find the value of \cos(A+B)cos(A+B) in simplest form.

Answers

Answer:

\(\cos(A + B) = \frac{23}{265}\)

Step-by-step explanation:

Given

\(\tan A=\frac{28}{45}\)

\(\cos B=\frac{3}{5}\)

Required

\(\cos(A+B)\)

In trigonometry:

\(\cos(A+B) = \cos\ A\ cosB - sinA\ sinB\)

We need to solve for cosA, sinA and sinB

Given that:

\(\tan A=\frac{28}{45}\) and the tangent of an angle is a ratio of the opposite side (x) to the adjacent side (y),

So, we have:

\(x =28\) and \(y = 45\)

For this angle A, we need t calculate its hypotenuse (z).

Using Pythagoras,

\(z^2 = x^2 + y^2\)

\(z = \sqrt{x^2 + y^2\)

\(z = \sqrt{28^2 + 45^2\)

\(z = \sqrt{2809\)

\(z = 53\)

From here, we can calculate sin and cos A

\(\sin A= \frac{opposite}{hypotenuse}\) and \(\cos A= \frac{adjacent}{hypotenuse}\)

\(\sin A= \frac{x}{z}\)

\(\sin A= \frac{28}{53}\)

\(\cos A= \frac{y}{z}\)

\(\cos A= \frac{45}{53}\)

To angle B.

Give that

\(\cos B=\frac{3}{5}\) and the cosine of an angle is a ratio of the adjacent side (a) to the hypotenuse side (c),

So, we have:

\(a = 3\) and \(b = 5\)

For this angle B, we need to calculate its opposite (b).

Using Pythagoras,

\(c^2 = a^2 + b^2\)

\(5^2 = 3^2 + b^2\)

\(25 = 9 + b^2\)

Collect like terms

\(b^2 = 25 - 9\)

\(b^2 = 16\)

\(b = \sqrt{16\)

\(b = 4\)

From here, we can calculate sin B

\(\sin B= \frac{opposite}{hypotenuse}\)

\(\sin B = \frac{b}{c}\)

\(\sin B = \frac{4}{5}\)

Recall that:

\(\cos(A+B) = \cos\ A\ cosB - sinA\ sinB\)

and

\(\cos B=\frac{3}{5}\)      \(\sin B = \frac{4}{5}\)       \(\sin A= \frac{28}{53}\)      \(\cos A= \frac{45}{53}\)

\(\cos(A + B) = \frac{45}{53} * \frac{3}{5} - \frac{28}{53} * \frac{4}{5}\)

\(\cos(A + B) = \frac{135}{265} - \frac{112}{265}\)

\(\cos(A + B) = \frac{135-112}{265}\)

\(\cos(A + B) = \frac{23}{265}\)

The value of \(\cos (A+B)\) is \(-\frac{96}{265}\).

Trigonometrically speaking, the sine, cosine and tangent of an angle are described by the following formulas:

\(\sin \theta = \frac{y}{\sqrt{x^{2}+y^{2}}}\) (1)

\(\cos \theta = \frac{x}{\sqrt{x^{2}+y^{2}}}\) (2)

\(\tan \theta = \frac{y}{x}\) (3)

Where:

\(\theta\) - Angle, in sexagesimal degrees.\(x\) - Adjacent leg.\(y\) - Opposite leg.

And we have the following trigonometric identity for the cosine of the sum of angles:

\(\cos (A+B) = \cos A\cdot \cos B - \sin A \cdot \sin B\) (4)

By (1) and (2), we rewrite (4):

\(\cos (A+B) = \frac{x_{A}\cdot x_{B}}{\sqrt{x_{A}^{2}+y_{A}^{2}}\cdot \sqrt{x_{B}^{2}+y_{B}^{2}}} - \frac{y_{A}\cdot y_{B}}{\sqrt{x_{A}^{2}+y_{A}^{2}}\cdot \sqrt{x_{B}^{2}+y_{B}^{2}}}\)

If we know that \(x_{A} = 28\), \(y_{A} = 45\), \(x_{B} = 3\) and \(y_{B} = 4\), then the cosine for the sum of angles is:

\(\cos (A+B) = \frac{28\cdot 3}{\sqrt{28^{2}+45^{2}}\cdot \sqrt{3^{2}+4^{2}}}-\frac{45\cdot 4}{\sqrt{28^{2}+45^{2}}\cdot \sqrt{3^{2}+4^{2}}}\)

\(\cos (A+B) = -\frac{96}{265}\)

The value of \(\cos (A+B)\) is \(-\frac{96}{265}\).

We kindly invite to check this question on trigonometric identities: https://brainly.com/question/24836845

Eliza cannot decide which of two bicycles to buy. The original price of each is $380. The first is marked down by 50%. The second is marked down by 30% with an additional 20% off. Part A: Find the sale price of each bicycle. Part B: Which bicycle should Eliza buy if the bicycles are the same except for the selling price?

Answers

Answer:

First Bike = $190 Second Bike = $212.80

Eliza should buy the first bike

Step-by-step explanation:

Find the upper bound for the following length:

A) 18.7cm correct to 1 decimal place.
B) 58.37cm correct to 2 decimal places.

Please help.

Answers

Part A

Let's say we measure a board length and we measure 18.639 cm. Now let's say we round to the nearest tenth. That would lead to 18.6 cm. The question is "What is the largest value we can measure such that we round to the nearest tenth to get 18.7 cm?"

Well we could measure 18.7 cm exactly, but there are values we could measure that are larger to round to that value. We could measure 18.71 or 18.72, etc etc all the way up to 18.74; once we get to 18.75, it will round to 18.8

So this means that the largest we can measure is 18.74 and it is the upper bound we're after.

Answer: 18.74 cm

=========================================================

Part B

We use the same idea as part A, but now we're extending out one more decimal place.

We could measure 58.37 cm exactly or we could measure 58.371 or we could do 58.372, etc until we arrive at 58.374

By the time we get to 58.375, it will round to 58.38 and that's not what we're after. So the highest we can go is 58.374 cm

Answer: 58.374 cm
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