A steep mountain is inclined 72 degree to the horizontal and rises 4500 ft above the surrounding plain. A cable car is to be installed by connecting a cable from the top of the mountain to a spot on the plain that is 900 ft from the base of the mountain. Find the shortest length of cable needed.

Answers

Answer 1

Answer:

[tex]l_c=5078.27ft[/tex]

Step-by-step explanation:

From the question we are told that:

Angle of inclination [tex]\angle=72 \textdegree[/tex]

Height [tex]h=4500ft[/tex]

Distance b\w cable base and mountain base [tex]d_{cm}=900ft[/tex]

Generally the equation for length of mountain base [tex]d_{mb}[/tex] is mathematically given by

 [tex]Tan\theta=\frac{h}{d_{mb}}[/tex]

 [tex]d_{mb}=\frac{h}{Tan\theta}[/tex]

 [tex]d_{mb}=\frac{4500}{Tan 72 \textdegree}[/tex]

 [tex]d_{mb}=1462.11ft[/tex]

Generally the Pythagoras equation for length of the cable [tex]l_c[/tex] is mathematically given by

[tex]l_c^2=h^2+(d_{mb}+d_{cm}^2)[/tex]

[tex]l_c^2=4500^2+(1462.11}+900}^2)[/tex]

[tex]l_c=5078.27ft[/tex]


Related Questions

HELP ASAP

The quadrilateral below is a trapezoid

Answers

Answer:

Step-by-step explanation:

9x+2+5x-4=180

14x-2=180

14x=80+2

x=182/14

x=13

angle B=5x-4

=5*13-4

=65-6

=61

What is the distance between the points (3,7) and (-2, 10)

Answers

Answer:

√34

Step-by-step explanation:

To find the distance between two points, you can use the distance formula, which is:

d = √[(x2 - x1)^2 + (y2 - y1)^2]

We can plug in the points (3, 7) and (-2, 10) to get:

d = √[(-2 - 3)^2 + (10 - 7)^2]

We can simplify.

d = √[(-5)^2 + (3)^2]

d = √(25 + 9)

d = √(34)

d =  √34

Change the following mixed numbers to improper fractions
a) 4 3/8 b) 2 1/3 c) 5 2/5

Answers

Answer:

A.35/8

B.7/3

C.27/5

those r the improper fractions of the mixed fractions

Joules and calories are two different units of energy. The equation j=0. 239c relates the measures, where c stands for calories and j stands for joules. Complete the table

Answers

To complete the table, we can simply multiply the number of calories by 0.239 to find the equivalent amount of Joules.

The equation relates Joules to calories as j = 0.239c, where c stands for calories and j stands for joules. For example, 1 calorie is equal to 0.239 Joules, 2 calories is equal to 0.478 Joules, and so on.

Joules (j)              Calories (c)

0.239c                  1

0.478c                  2

0.717c                  3

0.956c                  4

1.195c                  5

1.434c                      6

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In the right triangle shown, mZA = 45° and AB = 12.
B
12
45
How long is BC?

Answers

Answer:

6sqrt(2)=8.5

Step-by-step explanation:

Using pythagoras theorem

The measure of BC is 8.486 unit.

What is Trigonometry?

Trigonometry is the branch of mathematics that deals with particular angles' functions and how to use those functions in calculations. There are six popular trigonometric functions for an angle. Sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant are their respective names and acronyms (csc).

Given angle is 45 degree.

Hypotenuse = 12 unit

Now, using Trigonometry

sin 45 = P/ H

sin 45 = BC / 12

0.707 = x/ 12

x = 8.486 unit

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A cylindrical water tank of height 4 m is used to fill containers with dimensions 20 cm X 30 cm X 50 cm. If the tank can fill exactly 200 of these containers, find its base radius. (Take Pi = 3.14)

Answers

Answer:

0.35cm

Step-by-step explanation:

Step 1

We find the volume of the container.

The formula = Length × Width × Height

Length = 20cm

Width = 30cm

Height = 50cm

The volume of the tank = 20cm × 30cm × 50cm

= 30000 cm³

Step 2

We are told that:

The tank can fill exactly 200 of these containers

We have to find the volume that 1 cylinder will contain

Hence,

200 containers = 30000 cm³

1 container = x

Cross Multiply

200 × x = 30000cm³

x = 30000cm³/200

x = 150cm³

Step 3

We find the base radius of the cylindrical tank

Height = 4m

Convert to cm

1m = 100cm

4m = x

Cross Multiply

x = 4 × 100cm = 400cm

Volume of the cylinder = πr²h

Radius = √V/πh

Radius = √150/π × 400

Radius = 0.35 cm

Therefore, base radius = 0.35cm

The measurement of angle DBE is 0.1x-33 and the measurement of angle CBE is 0.3x-39 what's the value of x

Answers

Answer:

x = 405

Step-by-step explanation:

DBE is 0.1x-33 and the measurement of angle CBE is

The sum of both angles form a right angled triangle ;

DBE + CBE = DBC

DBC = RIGHT angled triangle = 90°

(0.1x-33) + (0.3x - 39) = 90°

0.1x - 33 + 0.3x - 39 = 90°

0.1x + 0.3x - 33 - 39 = 90

0.4x - 72 = 90

0.4x = 90 + 72

0.4x = 162

x = 162 / 0.4

x = 405

Please help! No links! Thanks!!

Answers

Answer: 30

Step-by-step explanation:

3 times 2 is 6 and divided by 2 is 3 and 3 times 10 is 30

What is the x in 4x+20?

Answers

Answer:

the answer is 5 because if you divide it its your answer

Answer:

x=-5

Step-by-step explanation:

Set " 4x+20" equal to 0 (4x+20=0)

Do the opposite operation of 20 (in this case is subtraction) and subtract 20 from both sides (4x+20-20=0-20).

You'll be left with 4x=-20.

Divide both sides by 4 (4x/4=-20/4).

4 divided 4 equals x.

-20 divided by 4 equals -5.

x=-5.

Hope this was helpful.

4 of 7
June rolls a fair dice 234 times.
How many times would June expect to roll a one?

Answers

Answer: 39 times

Step-by-step explanation: A fair dice has 6 sides with each side having a different number between 1 and 6. Therefore, the probability of rolling a 1 is 1/6. To find out how many times June would expect to roll a 1 after rolling the dice 234 times, you must multiply 234 by 1/6 to get the answer of 39.

Factor completely.
6y^2 — 30y

Answers

Answer:

6y² - 30y= 6y (y-5)

Step-by-step explanation:

Ricardo's town recently voted on a new education funding package. Of the voters who voted for the bill, 20% voted for it. What fraction of the voters voted in favor of the measure?

Enter the fraction in simplest form.

Answers

The fraction of the voters who voted in favor of the measure will be 1/5.

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

Ricardo's town recently voted on a new education funding package. Of the voters who voted for the bill, 20% voted for it.

The fraction of the voters who voted in favor of the measure will be given as,

⇒ 20%

⇒ 20 / 100

⇒ 1 / 5

The fraction of the voters who voted in favor of the measure will be 1/5.

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What is the perimeter?
Help plz...And No links!! I repeat No links!!

Answers

Answer:

36mm

Step-by-step explanation:

12^2 + 9^2 = c^2

144 + 81 = c^2

225 = c^2

[tex]\sqrt{225}[/tex] = 15

c = 15mm

12+9+15 = 36

Which point represents the value of –(–2) on the number line?
A number line has points A, negative 3, B, blank, 0, blank, C, 3, D.
Point A
Point B
Point C
Point D

Answers

The point that is -2 on the number line is point B. Option B

What is the number line?

We know that the number line can be taken as a representation of the numbers. We ought to know that the numbers that we find on the number line are the numbers that are increasing to the right as shown.

In the question that we have, the task that is before us is that we should be able to locate the point on the number line that has been labelled as -2 on this the point B non the line. This is the point that is read off as -2.

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What are the different types of algorithms?

Answers

Different types of algorithms are:

Brute Force algorithm Greedy algorithmRecursive algorithmBacktracking algorithm

What is Brute Force algorithm?

As a very general approach to problem solving and an algorithmic paradigm, brute-force search or exhaustive search—also referred to as generate and test—involves iteratively listing all potential candidates for the solution and determining whether each one satisfies the problem's statement.

A brute-force algorithm would count all integers from 1 to n and determine whether each one divides n without a remainder in order to find the divisors of a natural number n.

For the eight queens puzzle, a brute force method would look at all possible configurations of 8 pieces on the 64-square chessboard and determine whether each queen piece could engage in mutually exclusive attacks for each configuration.

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For what value of k the given equation 4 K X² 2k 4 x+ 8k+ 1 0 is a perfect square?

Answers

For k=0 or k=3, the given equation will be a perfect square.

Note:  we are taking the equation to be: (4−k) X^2+(2k+4) x+8k+1=0

Taking,

(4−k) X2+(2k+4) x+8k+1=0

Here, a=4+k, b=2k+4, c=8k+1

The given equation will be a perfect square, When D= 0

We know, D = b^2−4ac [A perfect square trinomial is an expression that can be generated from the square of a binomial equation. If an equation has the formula ax^2 + bx + c and meets the requirement b^2 = 4ac, it is referred to as a perfect square trinomial. The formula for the perfect square has the following variations: ax2 + 2abx + b2 = (ax + b). When b^2 = 4ac, we know that an equation is a perfect square.]

b2−4ac=0

(2k+4)2−4(4−k) (8k+1) =0

4k2+16+16k−4(32k−8k2+4−k) =0

K2+4+4k−32k+8k2−4+k=0

9k2−27k = 0

K2−3k = 0

k(k−3) =0

k=0 or k=3

Hence for k=0 or k=3, the given equation will be a perfect square.

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Combine the like terms to create an equivalent expression: 5n + 6 +(-7n) - 9

Answers

Answer:

-2n - 3

Step-by-step explanation:

5n + 6 + (-7n) - 9

5n + 6 - 7n - 9

5n - 7n + 6 - 9

-2n - 3

PLEASE HELP DUE IN 1 HOUR, AND PLEASE DON'T PUT THOSE LINKS OR ELSE I WILL REPORT YOU.

Answers

Answer:

h ≤ 16

Step-by-step explanation:

If he plans to cook 16 of less hotdogs, h is going to be equal to or less than 16. The circle is closed because he could cook 16.

Answer:

For the first question it would be answer 4

Since they ask you "at most 16 hot dogs," that means that it has to be less than or equal to 16.

For the second question, you would put the endpoint on 16 and make the arrow going left.

Given that y varies indirectly as x and that x = 15 when y = 3, then the value of k is​

Answers

Answer:

Step-by-step explanation:

the equation of this function has the form y = k/x, and when x = 15 and y = 3, the value of k can be calculated as follows:

3 = k/15, or (by multiplying both sides by 15) k = 45

Then y = 45/x

Given square ABCD, what is the length of AD?

Answers

If you want me to answer the question I obviously need the measurements

For every 150 dogs, there are 300 cats. write this ratio in simples form in all three ways.

Answers

Answer:

Step-by-step explanation:

150 : 300

In simplest form

1 : 2

In fraction form

1/2

In decimal form

0.5

Answer:

1:2 1/2 1÷2

Step-by-step explanation:

divide both of them by 150. You get 1:2, which can be converted to 1/2 and 1÷2

I need help plz no links

Answers

Answer:

Step-by-step explanation:

5x+8+6x-6=90

11x+2=90

11x=88

x=8

angle BOC = 6x-6 = 48-6 = 42 degrees

HELP MEEEEEEEE PLEASEEEEEEEE

Answers

Answer: 75p

Step-by-step explanation:

So, if one kilogram of bacon is £1.50, then half a kilogram would cost half of that, so 75p

please help quickly
The polygons are similar. x = ___ Write your answer as a decimal

Answers

By using the fact that the two images are similar, we can write and solve a linear equation to get x = 3/2.

How to find the value of x?

We know that the two figures are similar, then, if we take the quotient between the adjacent sides for both figures, these quotients should give the same value.

Thus, we can write the equation:

14/10 = (x + 9)/(x + 6)

Now we can solve that equation for x, if we multiply both sides by (x + 6) we will get:

(14/10)*(x + 6) = x + 9

Now we can multiply both sides by 10 to get:

14*(x + 6) = 10*(x + 9)

14x + 84 = 10x + 90

Now we can solve this linear equation for x.

14x - 10x = 90 - 84

4x = 6

x = 6/4

x = 3/2

That is the value of x.

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PLSSSSS HELP ME PLSSSSS I NEED TO EXPLAIN

Answers

Interlocking and repetition.
Hope it is what you need.

jaxon is ordering a taxi from an online service. the taxi charger 4$ just for the pickup and then an additional $0.75 per mile driven. how much would a taxi ride cost that is m miles long?

Answers

Answer:

i think you asking for a equation if so here

hope it helps brainiest?

Step-by-step explanation:

x=total cost

x=0.75m+4

Write the number 100 as a product of its prime factors in the same way,
Write the factors in order, from smallest to largest.

Answers

Answer:

100 = 4×25

= 1×2×2×5×5

.......

Hannah either walks or cycles to school. The probability that she walks to school is 0.75 If she walks, the probability that she is late is 0.6 If she cycles, the probability that she is late is 0.2 Work out the probability that on any one day Hannah will not be late for school. ​

Answers

If Hanna is walking there is a 0.4 chance of not being late. 0.75 x 0.4 = 0.3 probability of not being late.

If Hanna cycles there is a chance of 0.8 of not being late. 0.6 x 0.8 = 0.48.

0.48 + 0.3 = 0.78.

In other words, there is a 78% probability of her not being late.

PLS HELP ASAP 50 POINTS!!!!
Triangle ABC is congruent to triangle PDF. Dude AC corresponds to what side in triangle PDF

Answers

Answer:

PF

Step-by-step explanation:

Since the triangles are congruent, meaning they are the same shape, we can just match the lines between the two triangles. In triangle ABC, the line AC is the hypotenuse of the triangle. So, we need to find the hypotenuse of the triangle PDF. Looking, we can see the hypotenuse of the triangle PDF is the line, or side, PF.

Hope this helped!

Someone help me out my grade are bad

Answers

Answer: -26


Explanation: simplify.

Answer:

-26

Step-by-step explanation:

x - 4y =

-2 - (6 x 4) =

-2 - (24) =

-2 - 24 =

-26

Hope that helps! :)

-Aphrodite

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