a circular curve is to be constructed with a 225 ft radius and an interior angle of 55 degrees. the separation between the stakes along the arc is 50 ft. assuming the curve is laid out from point to point, what is the last deflection angle?

Answers

Answer 1

The curve is laid out from point to point, the last deflection angle of circular curve is 26.5°

In the given question we have,

Radius of circular curve (R) = 225 ft

intersection or central angle in circular curve (I or delta) = 55°

separtion between stakes alaong arc = 50 ft

Angle of deflection is measured from tangent at PC or PT to any point .

deflection angle formula

deflection angle = (Lc /L)(I/2)

where, Lc is long chord and L is lenth of arc , I is central angle

first we find out the value of Lc and L

using formula , R = Lc / 2sin(I/2)

Lc = 225× 2 sin(55°/2) = 208 ft

L = R × I ×π/180°

L = 225 × 3.14 ×55/180 = 215.8 ~ 216 ft

put all the vales in deflection angle formula we get ,

deflection angle= (208/216)(55°/2) = 26.48° ~ 26.5°

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A Circular Curve Is To Be Constructed With A 225 Ft Radius And An Interior Angle Of 55 Degrees. The Separation

Related Questions

11. Write an equation in vertex form for the parabola below.​

Answers

Answer:

Step-by-step explanation:

1. The vertex is where the parabola is changing from increasing to decreasing

2. From the picture, we can see that the vertex is at (1,2)

3. The formula for vertex form is f(x)=a(x-h)^2+k

4. Vertex is (1,2) or (h,k)

5. You can see that the parabola opens upside down like a "n" so it has been reflected in the x axis

6. So, your equaltion is f(x)=-(x-1)^2+2

7. In this cause you can see that a=-1, but if not given you would choose a random point on the parabola and plug it in :). Example:(0,1): 1 = a(0-1)^2+2

a=-1.

8. Your answer: f(x)=-(x-1)^2+2

giving Brainly show work​

Answers

Answer:

Step-by-step explanation:

5 1/2 +2x = 25

25- 5 1/2 = 2x

19 1/2 = 2x

x = 9.75

It took him about 9.75 weeks to lose at least 25 pounds.

Answer:

10 or more weeks

------------------

Weight lossFirst week - lost 5 and 1/2 pounds,Following weeks - lost 2 pounds per week,Total - at least 25 pounds.

Set inequality and find the least whole number2w + 5.5 ≥ 252w ≥ 25 - 2.52w ≥ 19.5w ≥ 19.5/2w ≥ 9.75 ≈ 10

It took Mr. Henry at least 10 weeks to lose 25 pounds.

let x be the exam grade of a random student taking calculus 1 at uiuc. suppose professor smith takes a random sample of 140 students from the calculus 1 class to see how they did on the exam. in his sample, he got a mean of 86 and a standard deviation of 11. approximate the probability that (the sample mean) would be higher than 88.4 or smaller than 84.4?

Answers

The probability that the sample mean would be higher than 88.4 or smaller than 84.4 is 0.85582

How to get the required probability

The probability is calculated using z score, this is used to determine the amount of standard deviations a sample, X is from the mean

The z score is given by the formula

z = (X - μ) / σ

Definition of variables

mean, μ = 86

sample size, n = 140

standard deviation, σ  = 11

The probability

P(z > 88.4) + P(z < 84.4)

z score for z < 88.4

z = (88.4 - 86) / 11

= 0.21818 p value = 0.41364

z score for z < 84.4

z = (84.4 - 86) / 11

=  -0.14545

p value for z < -0.14545 = 0.44218

The probability required = 0.41364 + 0.44218 = 0.85582

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How long will it take for $3, 900 to double if it is invested at 8% annual interest compounded 2 times a year?
Enter in exact calculations or round to 3 decimal places.

It will take___years to double.

How long will it take if the interest is compounded continuously?

Compounded continuously, it would only take___ years.

Answers

The number of years to double the investment is 8.824 years.

What is compound interest?

It is the interest we earned on the interest.

The formula for the amount earned with compound interest after n years is given as:

A = P [tex](1 + r/n)^{nt}[/tex]

P = principal

R = rate

t = time in years

n = number of times compounded in a year.

We have,

P = $3,900

R = 8%

n = 2

A = 2P = 2 x 3,900 = $7,800

Now,

A = P [tex](1 + r/n)^{nt}[/tex]

7,800 = 3,900 [tex](1 + 0.04)^{2t}[/tex]

78/39 = [tex](1.04)^{2t}[/tex]

2 = [tex](1.04)^{2t}[/tex]

Taking logs on both sides.

log 2 = 2t log(1.04)

0.30 = 2t x 0.017

0.30/0.017 = 2t

17.65 = 2t

Divide both sides by 2.

t = 17.65 / 2

t = 8.824 years.

Thus,

The number of years to double the investment is 8.824 years.

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The altitude y in feet of a hawk that is descending can be represented by the equation y=−20x+350, where x represents the time in minutes. The equation y=−10x+400 represents the altitude y in feet of an eagle after descending x minutes.



Which bird is closer to the ground after 8 minutes?



The
eagle
is closer to the ground.



How much closer?



feet

hurry

Answers

The hawk is closer to the ground after 8 minutes

It is 130 feet closer

How to determine the values

We have the equation as;

y = −20x+350. This represents the altitude y in feet of a hawky=−10x+400. This represents the altitude y in feet of the eagle

Also, x represents the descending time in minutes

Now, let's substitute the value of x as 8 minutes in the equations

If x = 8

For equation (1)

y = - 20(8) + 350

expand the bracket

y = - 160 + 350

y = 190 feet

For equation (2)

y = -10(8) + 400

expand the bracket

y = -80 + 400

y = 320 feet

The hawk is closer after 8 minutes

The distance from the ground(eagle) - The distance from the ground(hawk)

320 - 190

130 feet

Hence, the hawk is closer to the ground

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if a seed is planted, it has a 65% chance of growing into a healthy plant. if 12 seeds are planted, what is the probability that exactly 3 don't grow?

Answers

There is a 136.13 probability that 3 won't increase.

Only 0.65% of seeds will grow into robust plants.

There is a 0.35 probability that a seed won't grow into a robust plant.

In this case, n = 12 and r = 3.

11 seeds will sprout if 1 seed doesn't germinate. Raising 0.65 to the power of 11 and 0.35 to the power of 3 will result in the following: 11 seeds develop, and we use the 11th power; 3 seeds do not grow, so we use the power of 3:

So, the response is:

[tex]{}^{12}C_3[/tex] × [tex]{(chance of successful growth) }^{11}[/tex]x [tex](chance of Unsuccessful growth)^3[/tex]

= [tex]{}^{12}C_3[/tex] × [tex]0.65^{11}[/tex] × [tex]{0.35}^3[/tex]

= 362880 × 0.008750 × 0.042875

= 136.13

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1. Harper is going to create a graph of the equation y = -0.5x + 12. Which of the following will be true about the graph?


The graph will contain the origin.


The graph will increase from left to right.


The graph will cross the x-axis at (12, 0).


The graph will have a slope of -0.5.

Answers

The statement that would be true concerning the graph would be that the graph will have a slope of -0.5.

What is a slope?

A slope is defined as the difference between a chosen point on the vertical and horizontal axis.

The slope of a straight line graph has a constant equation that is used to determine its slope. Thus;

y = mx + b

Where m = the measure of the steepness of the straight line graph.

From the equation of the graph that was given;

y = -0.5x + 12. The slope of the graph which is represented by 'm' would be -0.5.

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The points (4, -3) and (x, 3) lie on the same straight line.

If the slope of the line is 2, what is the value of x ?

Answers

answer:

(1,3)

step-by-step explanation:

desmos.

The value of x will be equal to 7 for the given slope of 2 for the line.

What is the slope?

Slope or the gradient is the number or the ratio which determines the direction or the steepness of the line.

Given that the points (4, -3) and (x, 3) lie on the same straight line. The slope of the line is 2.

The slope of the line is calculated by the formula,

Slope = ( y₂ - y₁ ) / ( x₂ - x₁ )

2 = ( 3 + 3 ) / ( x - 4)

2(x-4) = 6

2x - 8 = 6

2x = 8 + 6

2x = 14

x = 14 / 2

x = 7

Therefore, the value of x will be equal to 7 for the given slope of 2 for the line.

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Can anyone write the equation of this graph?

Answers

The translated absolute value function graphed is defined as follows:

y = |x - 3| + 5.

What is the absolute value function?

The absolute value function, of vertex (h,k), is defined by the following piecewise rule, depending on the input of the function:

f(x) = |x - h| + k = x - h + k, x - h ≥ 0.f(x) = |x - h| + k = -x + h - k, x - h < 0.

In this problem, the coordinates of the vertex are given as follows:

h = 3, as the x-coordinate of the vertex is of 3.k = 5, as the y-coordinate of the vertex is of 5.

Hence the vertex is given by the following point:

(3,5).

Then the equation graphed is defined by the rule presented as follows:

y = |x - 3| + 5.

Which is a translation of 3 units right and 5 units up of the standard absolute value function.

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a shelf in the metro department store contains 80 colored ink cartridges for a popular ink-jet printer. seven of the cartridges are defective. (a) if a customer selects 2 cartridges at random from the shelf, what is the probability that both are defective? (round your answer to five decimal places.)

Answers

The probability that both are defective when a customer selects 2 cartridges at random from the shelf will be 0.00766.

What is probability?

The area of mathematics known as probability studies potential outcomes of events as well as their relative probabilities and distributions. Simply put, probability is the likelihood that something will occur. When we don't know how an event will turn out, we can discuss the likelihood or likelihood of various outcomes. Statistics is the study of events that follow a probability distribution.

Here,

The probability of choosing defective cartridge=7/80

So, the probability of choosing 2 defective cartridge=(7/80)²

=0.00765625

=0.00766

When a customer randomly chooses two cartridges from the shelf, the likelihood that both are flawed is 0.00766.

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Help! Consider the following three systems of linear equations.

Answers

Answer:

b & d

Step-by-step explanation:

what is the function rule in slope intercept form

Answers

Answer:

The picture is not Clear. Please provide a better view of the question.

Step-by-step explanation:

I need help with math

Answers

The leading coefficients and parabolic equations, considering the vertices, are given as follows:

1. a = 7/4, y = 7/4(x - 4)² - 1.

2. a = -2, y = -2(x + 1)² + 2.

Equation of parabola with vertex (h,k)


The equation of a parabola with vertex given by (h,k) is presented as follows:

y = a(x - h)² + k.

In which a is the leading coeffiicent.

For item 1, the coordinates of the vertex is given as follows:

(4,-1).

Hence:

h = 4, k = -1, and the equation is:

y = a(x - 4)² - 1.

When x = 6, y = 6, hence the leading coefficient is calculated as follows:

6 = a(6 - 4)² - 1

4a = 7

a = 7/4.

Thus the equation is:

y = 7/4(x - 4)² - 1.

For item 2, the vertex is:

(-1,2).

Hence:

y = a(x + 1)² + 2.

When x = 0, y = 0, hence the leading coefficient is calculated as follows:

0 = a(0 + 1)² + 2

a = -2.

Hence the equation is:

y = -2(x + 1)² + 2.

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Help me in this proportion maths problems

Answers

y is inversely proportional to the square of x, here y in terms of x is 2/5.

From the given problem y is inversely proportional to the square of x.  

A table of values for x and y is shown.

What is a proportional relationship?

Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is known as the "constant of proportionality".

From the table:

(a) As we know that, y is inversely proportional to the square of x,

Here k is proportionality constant.

y∝1/x²

y= k/x²

4=k/1²

k=4

So, y in terms of x is y=4/x²

(b) Putting the value of y=25, we get:

25=4/x²

x²=4/25

x=2/5

Therefore, y is inversely proportional to the square of x, here y in terms of x is 2/5.

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Ibram got a job selling bags of peanuts at the local fairground. He is paid a fixed amount of $340 per week plus $0.84 per item sold. This is represented by the equation P = 0.84 + 340 where P is the amount he is paid for the week and n is the number of bags of peanuts he sold. How much will Ibram be paid if he sells 380 bags of peanuts? If Ibram sells 380 bags of peanuts, he will earn S How many bags of peanuts did Ibram sell if he earned $1,087.60? for the week. If Ibram has earned $1,087.60, he sold bags of peanuts.

Answers

Answer:

Assuming the bags sold were for 1 week period.

1.  $659.20 for 1 week and 380 bags of peanuts

2. 890 bags

Step-by-step explanation:

The equation is missing the variable, n (the number of bags sold).  I'll take the liberty to add it after the $0.84/bag term, where it belongs:

    P = 0.84n + 340

The 340 is $340/week.  n must be in units of "bags/week."

1.  How much will Ibram be paid if he sells 380 bags of peanuts?

   P = $0.84n + $340

n = 380 bags (we will assume in 1 week).

   P = $0.84n + $340

   P = $0.84(380) + $340

   P = $659.20

2.  How many bags of peanuts did Ibram sell if he earned $1,087.60?

  P = $0.84n + $340

   P = $1087.60

   $1087.60 = $0.84n + $340

      $1087.60 - $340 = $0.84n

      $0.84n =  $1087.60 - $340

      $0.84n =  $747.60

 n = 890 bags  ( ! - I'm impressed)

Mr karki divided a sum of Rs 1,80,000 between his son and daughter in the ratio of 4:5 find the sum obtained by eachof them.

Answers

Answer:

Rs 80,0000 and Rs 100,000

Step-by-step explanation:

sum the parts of the ratio, 4 + 5 = 9 parts

divide the amount by 9 to find the value of one part.

Rs 1,80,000 ÷ 9 = Rs 20,000 , then

4 parts = 4 × Rs 20,000 = Rs 80,000 ← amount son receives

5 parts = 5 × Rs 20,000 = Rs 100,000 ← amount daughter receives

The sum obtained by the son is Rs. 80,000 and the daughter is Rs. 1,00,000.

Mr. Karki divided Rs. 1,80,000 in a ratio of 4:5 between his son and daughter.

Let the common multiple be x

∴ The son obtained Rs. 4x        --------1

And daughter obtained Rs. 5x        --------2

As the total sum is Rs. 1,80,000

∴ 4x + 5x = 180000

9x = 180000

x = 180000/9

∴ x = Rs. 20000

Putting the value of x in 1 and 2 we get,

The sum obtained by son = 4x = 4*20000 = Rs. 80000

And the sum obtained by daughter = 5x = 5*20000 = Rs. 100000

Thus, the son obtained Rs. 80,000 while the daughter obtained Rs. 1,00,000 which is in the ratio of 4:5.

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196 prime factorization pls help

Answers

the answer is 2^2 x 7^2

Problem 6 Triangle FGH is the image of isosceles triangle FEH after a reflection across line HF. Select all the statements that are a result of corresponding parts of congruent triangles being congruent.

A: EFGH is a rectangle.
B: EFGH is a rhombus.
C: Diagonal FH bisects angles EFG and EHG.
D: Diagonal FH is perpendicular to side FE.
E: Angle EHF is congruent to angle FGH.
F: Angle FEH is congruent to angle FGH.​

Answers

The statements which are as a result of corresponding parts of congruent triangles being congruent are:

Diagonal FH bisects angles EFG and EHG. Angle EHF is congruent to angle FGH.

Proof of congruent triangles being congruent

1) EFGH is a rectangle.

The above statements is not true in general. EFGH is a quadrilateral with opposites sides are equal, it may be rectangle in some cases but it is not always be a rectangle.

2). EFGH has 4 congruent sides.

The above statement is also false. EFGH has two opposite sides are congruent.

3). Diagonal FH bisect angles EFG and EHG.

The above statement is true. Triangle EFH and FGH both are isosceles triangles and hence they both have equal angles for the equal sides. Thus, it is true in all cases.

4). Diagonal FH is perpendicular to side Fe.

The above case is not true in general.

5). Angle FEH is congruent to angle FGH.

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which is a reasonable estimate for the amount of kernels serena needs to make 6 cups of popcorn

Answers

Answer:

four tablespoons to make 6 cups of popcorn.

Step-by-step explanation:

1.5 is nine Equals 2.25 x. And then divide both sides by 2.25. That gives you four tablespoons to make 6 cups of popcorn.

tan 30 x cos 30 in exact value

Answers

90 because you due the 3x3 en cos

A collector of rare books has a first-edition book worth $262, which he anticipates will grow in
value at a rate of 15% per year. How much will this book be worth 10 years from now?
If necessary, round your answer to the nearest cent.
Que
ans
2

Answers

Compound interest style problem.
The increase is compounded so 15% increase after 1 year, 15 x 15 % after 2 years, and so on. 15% = a multiplier of 1.15. And so after 10 years: 1.15 x 1.15 x ... x 1.15 (10 times). This is the same as 1.15^10. Multiply this by the starting amount, gives book value after 10 years as 262 x 1.15^10 = $1,059.94

The worth of the book after 10 years is $1061.1

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

First edition book worth = $262

Rate of increase per year = 15%

The worth of the book after t years can be given by the expression.

= 262 x [tex]1.15^{t}[/tex]

Now,

The worth of the book when t = 10.

= 262 x [tex]1.15^{10}[/tex]

= 262 x 4.05

= $1061.1

Thus,

The book is worth $1061.1 after 10 years.

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PLEASE HELP

*IMAGE BELOW*

Answers

(X+1) (x-8)

Or

H= x^2-8x-8/x

4/9 - 1/2 Subtract.

- Simplest form.


-1/9 - (-2/5) Evaluate.

- Simplest form.

Answers

Answer:

Step-by-step explanation:

Get the same denominator by multiplying 4/9 by 2/2 and 1/2 by 9/9 to get 8/18-9/18=-1/18

The two negative signs can become an addition to make -1/9+2/5 which can be rewritten as 2/5-1/9. We make them the same denominator and subtract to get 13/45.

Solve the system of equations.

Answers

Answer:

(7,5)

Step-by-step explanation:

[tex]-3y+4x=13 \implies -15y+20x=65 \\ \\ -5y-6x=-67 \implies 15y+18x=201 \\ \\ \therefore 38x=266 \implies x=7 \\ \\ \implies -3y+4(7)=13 \implies y=5 \\ \\ \therefore (7,5)[/tex]

What was the cost of full coverage insurance in female in her 50s as a percentage of the same insurance in a male in his 30s if female cost $819. 73 and male cost $1192. 64

Answers

the cost of full coverage insurance in female in her 50s as a percentage of the same insurance in a male in his 30s if female cost $819. 73 and male cost $1192. 64  was $ 68.73

We have the insurance coverage amount for men of 30 years and for women of 50 years. Therefore, to find the percentage that represents the cost of coverage of the 50-year-old woman based on the cost of coverage of the man, we need to perform the following operation:

Xw= Cw/Cm * 100%

Where:

Cw: cost of coverage for a woman of 50 years.

Cm: coverage cost for a 30-year-old man.

Xw= 819.73/1192.64 *100%

    = 68.73

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3 math questions for 50 points.

Answers

It’s 1 = C
2 = J
3 = B

Hope This Helps :)

please can someone solve this and tell me how at the end, it's gives -2 alpha beta instead of +2 alpha beta

I need answers ASAP pleeeeaase!!!!!

Answers

The value for the given expression  [tex]\alpha ^{2} + \beta ^{2}[/tex] will be [tex](\alpha +\beta )^{2}-2\alpha \beta[/tex].

What are Algebraic Identities?

Algebraic identities are algebraic equations that hold true for any value of each of their variables. In factoring polynomials, they are also used.

As we know, [tex](a+b)^{2} = a^{2} +2ab + b^{2}[/tex]  then,

For the given question, [tex](\alpha +\beta )^{2} = \alpha ^{2} +2\alpha \beta + \beta ^{2}[/tex]

Now, subtracting [tex]2\alpha \beta[/tex] on both sides then, we get

or, [tex](\alpha +\beta )^{2}-2\alpha \beta = \alpha ^{2} +2\alpha \beta + \beta ^{2}-2\alpha \beta[/tex]

or, [tex](\alpha +\beta )^{2}-2\alpha \beta = \alpha ^{2} + \beta ^{2}\\[/tex]

or, [tex]\alpha ^{2} + \beta ^{2}=(\alpha +\beta )^{2}-2\alpha \beta[/tex]

That's how the value  [tex]-2\alpha \beta[/tex] comes.

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two foods contain proteins, carbohydrates, and fats. food a costs $1 per pound and contains 30% protein, 10% fat, and 50% carbohydrates. food b costs $1.50 per pound and contains 20% protein, 4% fat, and 75% carbohydrates. what is a combination of x pounds of food a and y pounds of food b that provides at least 1 1 2 pounds of protein, 3 3 4 pounds of carbohydrates, and 1 5 pound of fat at the lowest cost? (x, y)

Answers

A combination of x pounds of food a and y pounds of food b that provides at least 1 1 2 pounds of protein, 3 3 4 pounds of carbohydrates, and 1 5 pound of fat  lowest cost is at (x,y) is (3,2).

Define function.

A mathematical phrase, rule, or law that establishes the link between an independent variable and a dependent variable (the dependent variable). In mathematics, functions exist everywhere, and they are crucial for constructing physical links in the sciences.

Given,

Function:

C = x + 1.5y

Subjected to:

30x + 20y ≥ 13/10 ×100 ≥ 130

10x + 4y ≥ 1/5 × 100 ≥ 20

50x + 75y ≥ 3 × 100 ≥ 300

Feasible region:

(0, 13/2), (3,2) (6,0)

C = x + 1.5y

(0, 13/2) ⇒ C = 0+ (1.5)(13/2)

(0.13/2) ⇒ C = 9.75

(3,2) ⇒ C = 3+ (1.5)(2)

(3,2) ⇒ C = 6

(6,0) ⇒ C = 6 + 0

(6,0)⇒ C = 6

A combination of x pounds of food a and y pounds of food b that provides at least 1 1 2 pounds of protein, 3 3 4 pounds of carbohydrates, and 1 5 pound of fat  lowest cost is at (x,y) is (3,2).

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Please can someone answer this question it would be much appreciated
Thanks so much :)

Answers

I need help too on this one

Answer:

you lowest tempeture in the mesosphere is -96

Step-by-step explanation:

Determine whether the function is one-to-one. If it is, find a formula for its inverse.

f(x) = 4/9x+8

Answers

Answer:

87c

Step-by-step explanation:

Other Questions
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