1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nignag [31]
3 years ago
13

A solider is parachute training. He jumps out of a plane high enough that the pilot determines the solider will land somewhere i

n an 240 foot radius land zone. The pilow forgot to mention to the solider that the parachute has very little maneuverablity (no steering). and there are 30 trees in the landing zone. Each tree from the air practically outlines a circle with a radius of 8 feet. What is the geometric probability that the solider will land in a tree?
Mathematics
1 answer:
Natalija [7]3 years ago
7 0

Answer:

  1/30

Step-by-step explanation:

The area of the landing zone is ...

  A = πr² = π·240²

  landing zone area = π(30²)(8²)

The area of a tree is ...

  A = πr² = π·8²

so the area of 30 trees is ...

  total tree area = 30(π·8²)

and the probability of landing in a tree is the ratio of areas:

  p(landing in tree) = (total tree area)/(landing zone area)

  = (π·30·8²)/(π·30²·8²) = 1/30

You might be interested in
The lateral area of a cylinder is 325 pi inch^2. The radius is 13 in. Find the surface area and volume. Please show all work!!!
USPshnik [31]
Answer:

Surface area =  663π in².
Volume = (676/3)π in² ≈ 225.33 π in²

Explanation:


1) We know the radius and the lateral area.

2) With the radius you can find the areas of the top and the bottom.

For that, you use the formula: 

area of the top = area of the bottom = π r² 


∴ π (13 in)² = 169π in² (each)


3) Then, the surface area is the sum of the lateral area and the two bases (top and bottom)

surface area = lateral area + bottom area + top area = 325π in² + 2×169π in² = 663π in².

3) You  can also find the height of the cylinder.

Use the formula: lateral area = 2π r h


∴ h = lateral area / [2 π r]

⇒ h = 325 π / [ 2π (13) ] = 12.5 in


4) With  the height you can find the volume.

Use the formula: V = (4/3) π r³ 

∴ V = (4/3) π (13 in)³ = (676/3)π in² ≈ 225.33 π in²
8 0
3 years ago
A local television station for a city with a population of 500,000 recently conducted a poll where they invited viewers to call
Scilla [17]

Answer:

b. Invalid, because the sample may not be representative of the population.

Step-by-step explanation:

A sample of around 10% of the population is needed to be representative.

In this question:

We have a population of 500,000, and a sample of 10,000.

10,000/500,000 = 1/50 = 0.02 = 2% of the population, so not representative, and option b is correct.

8 0
2 years ago
Simplify (9x^8y^3)1/2
Anna35 [415]
The answer is (9x^8y^3)/2.
4 0
3 years ago
How much bigger is 3/8 than 1/3 answer as a fraction
alekssr [168]
You would first need to find a common denominator for 3/8 and 1/3 the common denominator would be 24 because 8 times three is 24 and 3 times 8 is 24. After you find your common denominator your fraction becomes 9/24 + 8/24. This gives you 17/24.
7 0
3 years ago
What is 12.05 as a fraction
hram777 [196]

Answer:

241/20

Step-by-step explanation:

mmnmmmmmmnmmmmmm

4 0
3 years ago
Other questions:
  • Help on number 1 ? :)
    10·2 answers
  • Write an equation of the circle given its center and radius
    6·2 answers
  • Write the quadratic equation in standard form:<br> 5x – 20 = 3x2
    12·1 answer
  • Nina spent $75.00 on music in September. She spent $96.00 on music in
    6·2 answers
  • What is mXY based on the figure shown ​
    8·1 answer
  • F(x) = 10x2 + 8, evaluate f(-3).
    14·1 answer
  • Help.....................
    11·1 answer
  • Please help
    12·1 answer
  • A square barn has sides that are 7 meters long. what is the perimeter
    6·2 answers
  • One of the legs of a right triangle measures 10 cm and the other leg measures 7 cm.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!