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
34kurt
3 years ago
6

Heeeelp pls i beg of you​

Mathematics
1 answer:
Marat540 [252]3 years ago
5 0

Answer: 41.6%

Step-by-step explanation:

You divide the amount of trees 40ft or taller (10) by the total number of trees (24) so 10/24 = .416 (41.6%)

You might be interested in
Thickness measurements of ancient prehistoric Native American pot shards discovered in a Hopi village are approximately normally
storchak [24]

Answer:

a) 0.1587

b) 0.0475

c) 0.7938

Step-by-step explanation:

Let's start defining our random variable.

X : ''Thickness (in mm) of ancient prehistoric Native American pot shards discovered in a Hopi village''

X is modeled as a normal random variable.

X ~ N(μ,σ)

Where μ is the mean and σ is the standard deviation.

To calculate all the probabilities, we are going to normalize the random variable X.

We are going to call to the standard normal distribution ''Z''.

[(X - μ) / σ] ≅ Z

We normalize by subtracting the mean to X and then dividing by standard deviation.

We can find the values of probabilities for Z in a standard normal distribution table.

We are going to call Φ(A) to the normal standard cumulative distribution evaluated in a value ''A''

a)

P(X

P(ZΦ(-1) = 0.1587

b)

P(X>7)=P(\frac{X-4.5}{1.5}>\frac{7-4.5}{1.5})

P(Z>1.666)=1-P(Z\leq 1.666)=

1 - Φ(1.666) = 1 - 0.9525 = 0.0475

c)

P(3

P(-1 Φ(1.666) - Φ(-1) = 0.9525 - 0.1587 = 0.7938

8 0
3 years ago
What’s the exact value of Cos(127.5)? Using trig identities like half angle and PLEASE EXPLAIN
vlada-n [284]

Answer:

−0.608761429

Step-by-step explanation:

use the pathagreom theorem if you have two sides subtract that from 180

8 0
3 years ago
Line DCE is parallel to line AB
krek1111 [17]

Answer:

Angle DCA = Angle CAB. (Alternate Interior Angle)

Angle DCA = 68°

Angles(DCA + ACB + BCE) = 180°. (Linear Pair)

Angle ACB + 68° + 33° = 180°

Angle ACB = 79°

Therefore,

Angle ABC = 33°. (Alternate Interior Angle)

4 0
3 years ago
John bought a video game that was 20% off. The game was originally $30. How much money DID HE SAVE by getting it on sale?
geniusboy [140]

Answer:

$6

Step-by-step explanation:

when you multiply $30 by 20% you get 6. 30-6= $24 after the 20% is taken off, but he saved $6.

7 0
3 years ago
Twenty students in class A an 20 students in class B were asked how many hours they took prepare for a exam
inn [45]
What are you talking about

7 0
3 years ago
Other questions:
  • A map has a scale of 2 inches = 20 kilometers. If the distance between two cities on the map is 10 inches, what is the actual di
    8·1 answer
  • PLEASE PLEASE PLEASE PLEASE PLEASE HELP! ANSWER WORTH 25 POINTS! I need answers ASAP!
    6·1 answer
  • Look at picture<br>look at picture​
    9·1 answer
  • On a 10 question exam each question is worth 10 points. how many ways can you make a 70%?
    14·1 answer
  • Help!!!
    13·2 answers
  • One marble is selected at random from a bowl containing 15 blue marbles and 12 red marbles. What are the odds of selecting a blu
    10·2 answers
  • mr chowdhary purchased a house for rs 6.1 lakh and spent 30000 on its repairs. he then sold it rs 8 lakh. find his gain percent​
    14·1 answer
  • How many ways can you choose a manager and assistant from 7-person task force? *​
    8·1 answer
  • There is a bag filled with 5 blue and 4 red marbles.
    15·1 answer
  • I need help with this question! (20 POINTS)
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!