a tunnel is constructed with a semielliptical arch. the width of the tunnel is 60 feet, and the maximum height at the center of the tunnel is 25 feet. what is the height of the tunnel 5 feet from the edge? round your answer to the hundredths place.

Answers

Answer 1

As a result, the tunnel is 13.83 feet high, 5 feet from the edge.

An ellipse is an oval curve on a plane that contains two fixed points called foci. The sum of the distances between the two foci from each point on the ellipse is constant at all points.

Since the tunnel has an arch that is semi-elliptical, we can put the ellipse's center at the center of its 60-foot width.

What is an ellipse?

An ellipse is a two-dimensional shape that is defined by its axes in geometry. When a plane intersects a cone at an angle to its base, it creates an ellipse. It focuses on two things. For each point in the curve, the sum of the two distances to the focal point remains constant.

What are an ellipse and an example?

An ellipse is the locus of points whose sum of their distances from its two foci is constant and has an eccentricity of less than one. The two-dimensional egg shape and the running tracking in a sports stadium are simple examples of the ellipse in our everyday lives.

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Related Questions

Jason is training to run in a marathon. His goal for this week is to run a minimum of 35 miles. So far this week, he has already run 15 miles. Which inequality could be used to determine the mean number of miles, m, he would need to run each day for 4 more days to achieve his goal?.

Answers

As per the concept of inequality, the mean number of miles, m, he would need to run each day for 4 more days to achieve his goal is 15 + 4m ≥ 35

Inequality

Inequality shows a non equal relationship between two numbers or two expressions.

Given,

Jason is training to run in a marathon. His goal for this week is to run a minimum of 35 miles. So far this week, he has already run 15 miles.

Here we need to determine the inequality could be used to determine the mean number of miles, m, he would need to run each day for 4 more days to achieve his goal.

Here we know that, his goal for this week is to run a minimum of 35 miles.

For this week, he has already run 15 miles.

In the given inequality that could be used to determine the mean number of miles, m, he would need to run each day for 4 more days to achieve his goal.

=> 15 + 4m ≥ 35

Here we know that, 4m = number of m miles run in 4 days.

Therefore, inequality that could be used to determine the mean number of miles, m, he would need to run each day for 4 more days to achieve his goal is written as,

=> 15 + 4m ≥ 35

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3. Alex rode his bike at a constant speed. He rode 1 mile in 6 minutes. Write two equations to model this situation using t as time in minutes, and d as distance in miles. T=D=

will give brainliest​

Answers

Answer: t = 5d t = 1/5d

Step-by-step explanation:

BRAINLIST! Please answer!!Parallelogram Properties
1. In Parallelogram JKLM if m

Answers

Answer:

60

Step-by-step explanation:

I believe two angles should add up to 180 in a parallelogram

19. Factor to find the zeros: f(x) = x² + 6x.
(-6,0)
no solution
(0,0) and (-6,0)
(6,0)

Answers

Zeros of f(x) = [tex]x^{2} +6x[/tex] is (0,0) and (-6,0).

Given, f(x) = [tex]x^{2} +6x[/tex]

                = x(x+6)

For zeros, function f(x) = 0

x(x+6) = 0

x = 0    x+6 = 0

                x = -6

Putting values of x in equation,

For x = 0

f(x) = [tex]0^{2}+6(0)[/tex]

     = 0

Therefore, (0,0)

For x = -6

f(x) = [tex](-6)^{2}+6(-6)[/tex]

     = 36 - 36

     = 0

Therefore, (-6,0)

Hence, zeroes for f(x) is (0,0) and (-6,0).

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–2.5x – 7.5 = x + 6.5

Answers

Answer:

Step-by-step explanation:

x=-4 that should be the answer i don't really know how too explain but i did this 2 years ago

Answer:

Step-by-step explanation:

!*EMERGENCY, WILL GIVE BRAINLIEST QUICK*!

This table represents the cups of coffee, c, a coffee shop has left after being open for h hours. When graphed, all of the points in the table lie on the same line. What is the slope and y-intercept of the line? Drag and drop the slope and y-intercept into the corresponding boxes.
Slope -48, 9 ,48 ?
y-intercept 432, C, 6, 9?

(LEFT SIDE IS HOURS, RIGHT SIDE CUPS)
TABLE-------
HOURS, H / CUPS, C
0 / 432
3 / 288
6 / 144
9 / 0​

Answers

Answer:

Slope is -48, y-intercept is 432

[tex]y = - 48x + 432[/tex]

Step-by-step explanation:

[tex]m = \frac{432 - 288}{0 - 3} = \frac{144}{ - 3} = - 48[/tex]

[tex]432 = - 48(0) + b[/tex]

[tex]432 = 0 + b[/tex]

[tex]b = 432[/tex]

[tex]y = - 48x + 432[/tex]

6.The percents of three types of tickets collected at the gate for a high school football game are shown.

a.Write the percents as decimals and as fractions.

b.There is one other type of ticket that is not shown. It is a ticket for a child under 5. What percent of the tickets were of this type?

Answers

The percentage of three types of tickets collected at the gate:

ai) student's ticket as a percent: 48%, as a fraction: 48/100, and as a decimal: 0.48.

aii)Adult's ticket as a percent:28%, as fraction:28/100, and as decimal: 0.28.

aiii) Senior's( 65 and older) ticket: 14%, as fraction:14/100 and as decimal: 0.14.

b)Tickets for children under 5years is: 10%, as fraction:10/100, and as decimal: 0.10.

what is percentage?

This is a number written as a ratio of a hundred or as a fraction of a hundred. it is represented with "%".

How to calculate the percentages:

.As a fraction: Write it as a ratio of a hundred.

ticket type for

i) students48% =48/100

ii)Adult       28%=28/100

iii)Senior's( 65 and older)14% =14/100

.As a decimal: Write it as a ratio of hundred then divide by hundred.

ticket type for:

i) students48% =48/100=0.48

ii)Adult       28%=28/100=0.28

iii)Senior's( 65 and older)14% =14/100=0.14

b)To calculate the percentage of tickets of children under 5 years:

Percent(% )means 100

Therefore,

100 - student ticket %- Adult's ticket % - Senior's( 65 and older) ticket%

100- 48 - 28 - 14 = 10%

Thus for children under 5 years,

i)As percent is:10%,

ii)as fraction:10/100

iii)decimal: 0.10.

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help me please...........................................................................................................................

Answers

The solution is

The Hypotenuse = FD

Side Opposite of ∠F = MD

Side Adjacent of ∠F = MF

Side Opposite of ∠D = MF

Side Adjacent of ∠D = MD

What are trigonometric relations?

Trigonometry is the study of the relationships between the angles and the lengths of the sides of triangles

The six trigonometric functions are sin , cos , tan , cosec , sec and cot

Let the angle be θ , such that

sin θ = opposite / hypotenuse

cos θ = adjacent / hypotenuse

tan θ = opposite / adjacent

tan θ = sin θ / cos θ

cosec θ = 1/sin θ

sec θ = 1/cos θ

cot θ = 1/tan θ

Given data ,

The triangle FMD and the ∠M is a right angle

So , ∠M = 90°

From the figure , we can deduce that

The Hypotenuse = FD

Side Opposite of ∠F = MD

Side Adjacent of ∠F = MF

Side Opposite of ∠D = MF

Side Adjacent of ∠D = MD

Hence , the required solution is based on trigonometric relations

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PLEASE HELP!!


Ian buys a two-gallon bottle of juice for $28.16. What is the unit rate of the cost of the juice per fluid ounce?
1 gallon = 4 quarts
1 quart = 2 pints
1 pint = 2 cups
1 cup = 8 fluid ounces

Before you try that problem, answer the question below.
How many fluid ounces of juice did Ian buy?

Answers

There is 128 ounces in one gallon. So for two it would be 256 oz. He bought 256 oz.

Then since it’s $28.16 just divide that by 256 oz which would give you $.11.

So $0.11 per fluid ounce.

Answer: 11 Cents per ounce of Juice

Step-by-step explanation:

The first step here is going to be to find how many ounces are in a gallon. This can be determined as shown using the given information you stated above:

1 gallon * 4 quarts * 2 pints * 2 cups * 8 ounces = 128 ounces in 1 gallon

Step 2 is multiplying 128 ounces by 2 because we have two gallons of juice in the bottle:

128 ounces per gallon* 2 gallons = 256 ounces

Step 3 is dividing the total cost of the juice, which is $28.16, by the number of total number ounces (256)

$28.16 / 256 ounces = .11 dollars per ounce (aka 11 cents per ounce)

(x-24)
296
29°

Show work

Answers

Answer:

x=59

Step-by-step explanation:

this is a full circle which is 360 degrees

We subtract 296 from 360 first

360-296=64

Then subtract 29 from 64

64-29=35

now we can set x-24 equal to 35

X-24=35

  +24 +24

x=59

Hopes this helps please mark brainliest

a blank CD can hold 80 minutes of music you have burned m minutes of music onto the cd which equation models the amount of time that is left on the cd

Answers

The equation that models the amount of time that is left on the cd is 80 - m.

What is an equation?

An equation is the statement that illustrates that the variables given. In this case, two or more components are taken into consideration to describe the scenario.

It is vital to note that an equation is a mathematical statement which is made up of two expressions that are connected by an equal sign.

In this case, the blank CD can hold 80 minutes of music you have burned m minutes of music onto the cd. The time left will be:

= Total minutes - Time used

= 80 - m

This illustrates the equation.

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A company claims that the mean weight per apple they ship is 120 grams with a standard deviation of 12 grams. Data generated from a sample of 49 apples randomly selected from a shipment indicated a mean weight of 122. 5 grams per apple. Calculate and interpret a 95% confidence interval for the mean weight per apple.

Answers

The apple mean weight's 95% confidence interval is;

CI = (119.14, 125.86) (119.14, 125.86)

The confidence interval above should be understood as;

We have a 95% confidence that each apple's average weight, across all of the apples they send, falls between 119.14 and 125.86 grams.

Ours is given;

12 for the standard deviation.

Sample size: 49; n

x = 122.5 is the indicated mean weight.

The current confidence interval formula is;

CI = x⁻ ± z(σ/√n)

Tables indicate that z = 1.96 at a 95% confidence level.

Thus;

CI = 122.5 ± 1.96(12/√49)

CI = 122.5 ± 3.36

CI = (122.5 - 3.36), (122.5 + 3.36)

CI = (119.14, 125.86)

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3. Here is a balanced hanger diagram.
What is the weight of a square if a triangle weighs 4 grams?
Explain your reasoning.

Answers

Answer:bgvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvddddddddddddddddddddddddddd

Step-by-step explanation:

Answer:

Step-by-step explanation:

well it will be 16 because a square has 4 sides so you multiply by the grams that would be 4. 4*4= 16

A cup of coffee is poured at 190° Fahrenheit, and is allowed to cool in a 70° room. If the temperature of
the coffee is 170° after half an hour,
a. What will the temperature be after 70 minutes?
b. How long will it take the coffee to cool to 120°2

Answers

Answer:

a) 190 - 70(2/3) = 430/3 = 143 1/3 degrees

b) 190 - (2/3)x = 120

70 = 2x/3

210 = 2x

Step-by-step explanation:

x = 105 minutes

10 PIONTS ANSWER PLEZ IT IS NOW DUE!!!!!!

15. A triangle pattern is shown below.



Figure Perimeter


1 triangle 24


2 triangles 30


3 triangles 36


Which equation relates the number of triangles in the figure (n) to the perimeter of the figure (P)?



(1 point)


P = 6n + 18


P = 9n + 6


P = 6n + 9


P = 9n + 12

Answers

The equation which relates the number of triangles in figure (n) to the perimeter of the figure (P) is P = 6n + 18. Option A is correct.

We are given:

The perimeter of the 1 triangle = 24

The perimeter of the 2 triangle = 30

The perimeter of the 3 triangle = 36

As we can see in the given figures two sides with lengths of 9 are fixed and the side with a length of 6 is varying.

So, we can write this as,

P = 6n + 18, where n = number of triangles.

Now, check the equation formed by substituting the values;

Substitute n = 1, and we get;

P = 6(1) + 18

P = 6 +18

P = 24 True.

Substitute n = 2, and we get;

P = 6(2) + 18

P = 12 +18

P = 30 True.

Substitute n = 3, and we get;

P = 6(3) + 18

P = 18 + 18

P = 36, true.

So, it is true for all the figures.

Thus, the equation which relates the number of triangles in figure (n) to the perimeter of the figure (P) is P = 6n + 18. Option A is correct.

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Questions 1-4: The number of classes (X) a student takes in a given semester follows the following probability distribution: X 0 1 2 3 4 5 PIX) 0.4 0.25 0.15 0.08 0.02 ??? 1. What is the probability they take 5 classes? 2. What is the probability they take at least one class? 3. What is the probability a student will take 2 or 3 classes in a semester? 4. What is the expected number of classes a student will take in a given semester? (show your work on this one, and a screenshot of how you worked it out on the calculator or excel).

Answers

The probability to take 5 classes is 0.1, while the probability to take at least one class is 0.6, the probability to take 2 or 3 classes is 0.23 and the expectation of the distribution is 1.37.

The distribution given is

X                  PIX)

0                  0.4

1                   0.25

2                  0.15

3                  0.08

4                  0.02

5                  ???  

1.

We know that the sum of all the probabilities in a probability distribution is always equal to 1.

Let the probability of X = 5 be p

Hence,

0.4 + 0.25 + 0.15 + 0.08 + 0.02 + p = 1

or, 0.9 + p = 1

or, p = 1 - 0.9

or, p = 0.1

Hence the probability to take 5 classes is 0.1.

2.

We need to find P(X ≥ 1)

= 1 - P(X = 0)

From the distribution we know that P(X = 0) is 0.4

Therefore, P(X ≥ 1)

= 1 - 0.4

= 0.6

Hence, the probability to take at least one class is 0.6

3.

The probability to take 2 or 3 classes in a semester

= P( X = 2)  +  P(X = 3)

= 0.15  +  0.08

= 0.23

4.

The expectation of any distribution

= ∑xp(x)

where,

x is the random variable

p(x) is the probability of the random variable

Therefore,

E(X) = 0 X 0.4  +  1 X 0.25  +  2 X 0.15  +  3 X 0.08  +  4 X 0.02  +  5 X 0.1

= 0  +  0.25  +  0.30+  0.24  +  0.08  +  0.50

= 1.37

Therefore the expectation is 1.37

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The slope of the line below is -1/7. write a point slope equation of the line using the coordinates of the labeled point.

Answers

The equation of a straight line can be written if its slope and any one point lying on it is given. The  equation of the line for given slope and point is  (y - 3) = -1 / 7 × (x - 3). The correct answer is option B.

What is the equation for a straight line?

A straight line can be written in the form of equation as, y = mx + c.

Two straight lines intersect each other only at one point.

When two straight lines are parallel to each other the angle between them is zero.

Given that,

The slope of the line = -1 / 7

The coordinate of the point on the line = (3,3)

The equation of a line having slope m and passing through a point (x₁, y₁) is given as,

(y - y₁) / (x - x₁) = m

Thus, the equation of the line for given slope and point is given as,

(y - 3) / (x - 3) = -1 / 7

=> (y - 3) = -1 / 7 × (x - 3)

Hence, the equation of the line for given slope and point is  (y - 3) = -1 / 7 × (x - 3).

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Write an equation of
the line that passes
through (7, 10) and
is perpendicular to the
line y =
x-9.
Equation:
2

Answers

Equation of the line that passes through (7, 10) and is perpendicular to the line y =x-9 is y = -x+17.

Given equation, y = x-9

Slope = m = 1

Slope of line perpendicular to given line = -1/m

                                                                    = -1/1

                                                                    = -1

Let the equation of line be y = mx + c

Passes through A(7,10)

10 = -1(7) + c

10 = -7 + c

c = 10 + 7

  = 17

Hence, equation is y = -x+17

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Quadrilateral ABCD is inscribed in this circle.
What iS the measure of LA?
Enter your answer in the box.

Answers

The measure of ∠A is 106°.

Quadrilateral ABCD is inscribed in this circle.

To find out the measure of LA:

We are given that, 'Quadrilateral ABCD is inscribed in the circle'.

So, we get that,

'ABCD is a cyclic quadrilateral' that is The sum of the opposite interior angles is 180°.

Thus, we have,

∠A +∠C = 180°

i.e. ∠A + 74° = 180°

i.e. ∠A = 180° - 74°

i.e. ∠A = 106°

Thus, the measure of ∠A is 106°.

Hence the answer is the measure of ∠A is 106°.

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PLEASE HELP
thank you !!












Answers

Answer:

34562

Step-by-step explanation:

you add them together

Justify 3(2x + 5) - 7 = 2x + 32

Answers

3(2x + 5) - 7 = 2x + 32
Multiply 2x and 5 by so that you are left with 6x + 15
6x + 15 - 7 = 2x + 32
Add like terms
6x + 8 = 2x + 32
Move like terms to the same side
6x - 2x = 32 - 8
Add like terms
4x = 24
Divide both sides by 4
x = 6
Now plug in 6 for x into the original equation and left side equals right side
i hope this helped !!

IIIIIIIIIII NEEEEEDDDDD HELPPPPP FASTTTTT!!!!!!!!!!!!! If a circle has a circumference of 60π, which equation shows the correct value for the radius, r?

Answers

we know that [tex]r[/tex]

area of the circle is equal to

A=  [tex]\pi[/tex] × [tex]r^{2}[/tex]

solve for [tex]r[/tex]

[tex]r[/tex] = [tex]\sqrt{\frac{A}{\pi } }[/tex]

for A=60cm2

[tex]r[/tex] = [tex]\sqrt{\frac{60}{\pi } cm}[/tex]

we know that

[tex]\sqrt{60\\}[/tex] = [tex]\sqrt{2^{4} }[/tex] × 3 × 5

=2[tex]\sqrt{15}[/tex]

so,

[tex]\sqrt{\frac{60}{\pi } }[/tex] = 2 [tex]\sqrt{\frac{15}{\pi } }[/tex]

2[tex]\sqrt{\frac{15}{\pi } } = 2\frac{\sqrt{15} }{\pi }[/tex]  × [tex]\frac{\sqrt{\pi } }{\sqrt{\pi } }[/tex]

= 2 [tex]\frac{\sqrt{15\pi } }{\pi }[/tex]cm

this means the answer is-

2 [tex]\frac{\sqrt{15\pi } }{\pi } cm[/tex]

two cars start moving from the same point. one travels south at 60 miles per hour. the other car travels west at 25 miles per hour. at what rate is the distance between the cars increasing 2 hours later?

Answers

The distance between the cars increasing 2 hours later is 65mph

Let’s say, the velocity in the west is x, the velocity in the south is y, and the distance between them is s at any time t. Since the west and south directions are perpendicular to each other, this will be for a right-angled triangle.

So, we have [tex]x^2 + y^2 = s^2[/tex] --------------(1)  

(please note all of them are changing as t increases.)

So, x=u×t and y=v×t,

so using (1), we can write

[tex][(u\times t)^2 + (v\times t)^2] = s^2[/tex]

[tex]s= \sqrt{(u^2 + v^2)}* t[/tex]

Using the value of u and v,

get [tex]\sqrt{(u^2 + v^2)}[/tex]= 65

So, s= 65 t

ds/dt = 65 mph

There fore the distance between the cars increasing 2 hours later is 65mph

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f/4 + 6 ≤ 7 what is the answer

Answers

Answer:

f ≤ 4

Step-by-step explanation:

f/4 + 6 ≤ 7

f/4 ≤ 7 - 6

f/4 ≤ 1

f ≤ 4

Answer:

 F<4

________

________

Which equation represents a line that has a slope of One-third and passes through point (–2, 1)?
y = one-third x minus 1
y = one-third x + five-thirds
y = one-third x minus five-thirds

Answers

Y= one third x minus 1
M=1/3
Point(-2,1)

Formula - y=ax+b
1=1/3*(-2)+b
1=-2/3+b
B=5/3

Therefore the answer is
Y=1/3x+5/3
Y=on-third x + five-thirds

BRAINLIEST FOR THE BEST ANSWER!

Question:
WRITING-Your friend is having trouble understanding the Midpoint Formula.

a. Explain how to find the midpoint when given the two endpoints in your own words.

b. Explain how to find the other endpoint when given one endpoint and the midpoint in your own words.

PLEASE DO NOTE THAT THIS IS WRITING NOT OPTIONS. Thank you in advance! :)​

Answers

The formula that is used to calculate the midpoint for the given two point is written as ( (x₁ + x₂)/2 , (y₁ + y₂)/2).

Mid point:

Midpoint refers the point on a line that is at an equal distance from either end.

Given,

Here we have to explain the concept of midpoint in a simple manner.

According to the definition, midpoint refers the central point between the two points.

So, in a simple manner we have said that the mid point is calculated by finding the average of the two given point.

For example, (x₁, y₁) and (x₂, y₂) are the points, then the midpoint (xₙ, yₙ) is calculated by using the formula,

(xₙ, yₙ) = ( (x₁ + x₂)/2 , (y₁ + y₂)/2)

Similarly, if one point and the midpoint is given, then the another point is calculated by apply the remaining point as (x, y) and solve it accordingly, then we can get the value of it.

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use the communitive property to simplify the expression. 1/3 + 3/5 + 2/3

Answers

The simplified expression using the commutative property is in the first option :  1/3 + 2/3 + 3/5   = 1 + 3/5 = 1 3/5 .

now the given expression is 1/3 + 2/3 + 3/5 .

Therefore this expression can be simplified using the commutative property where we put the like terms together.

1/3 + 3/5  + 2/3

= 1/3 + 2/3 + 3/5 (here we use commutative property on the second and third terms of the expression)

= 1 + 3/5 (we know that 1/3 +2/3 = 1)

=1 3/5

Hence by using the commutative property we calculate the sum easily.

The commutative property applies to the arithmetic operations of addition and multiplication. This suggests that no matter how the numbers are arranged or placed, the result of adding or multiplying them remains the same.

As an illustration, 1 + 5 = 6 and 5 + 1 = 6. No matter how two numbers are added, the sum is unaffected. Multiplication uses the same principle. The commutative property does not hold for division and subtraction because the results are completely different when the numbers are rearranged.

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If Bruce can eat 2 1/2 bananas per day, how many bananas can Bruce can eat in 4 weeks?

Answers

The number of bananas Bruce can eat in 4 weeks is 70 bananas

Calculating number

From the question, we are to calculate the number of bananas Bruce can eat in 4 weeks.

From the given information,

Bruce can eat 2 1/2 bananas per day

First, we will determine the number of days there are in 4 weeks

NOTE: There are 7 days in 1 week

If there are 7 days in 1 week

Then,

There are 4 × 7 days in 4 weeks

4 × 7 = 28 days

That is, 4 weeks = 28 days

Now, we will determine the number of bananas Bruce can eat in 28 days

If Bruce can eat 2 1/2 bananas per day

Then,

Bruce can eat 28 × 2 1/2 bananas in 28 days

28 × 2 1/2 = 28 × 5/2

= 14 × 5

= 70

Hence, Bruce can eat 70 bananas in 4 weeks

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Answer:

70

Step-by-step explanation:

Bruse can eat 2 1/2 bananas in one day so:

1day=2 1/2bananas.

if 1wk=7days

4wks=x =28days

1day=2 1/2 bananas

28da

28×2 1/2

=28×5/2=70

answer=70bananas

Solve this equation please :)

Answers

The ratio of BE/BC is 1:3.

What is ratio?

Ratio basically compares quantities, that means it show value of one quantity with respect to other quantity.

If a and b are two values, their ratio will be a:b,

Given that,

In triangle ABC, the ratio of FA and CF is 1:2.

Since, the point G is the midpoint of BF,

Implies that G divides  BF in ratio 1:1.

By using mass point geometry,

The ratio of BE/BC=1:3

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suppose 1,872 of 2,600 registered voters sampled said they planned to vote for the republican candidate for president. using the 0.95 degree of confidence, what is the interval estimate for the population proportion (to the nearest 10th of a percent)?

Answers

The interval estimate for the population proportion
(1778, 2470).here we can use normally .

Given 1,872 of 2,600 registered sampled said they planned to vote for the republican candidate for president. using the 0.95 degree of confidence.
Here given that the 95% is rhe for people will for the Republican candidate for president
So 95 percent of 26,00 is given by
95/100*2600
2470
If we say that 1872 people say that then can go for voting 2600 that means 72 percent of people will atleast
So 72 percent of 2470 is
1778
So the interval (1778, 2470).

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