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
RSB [31]
3 years ago
12

If the bottom of the ladder is 3ft from a wall and the top of the ladder is 4ft from the ground, then how long is the ladder?

Mathematics
1 answer:
statuscvo [17]3 years ago
6 0

Answer:

5ft

Step-by-step explanation:

4^{2} +3^{2} =c^{2} \\16+9=25\\\sqrt{25} =5

You might be interested in
How does quantitative information differ from qualitative information.
Kobotan [32]
Quantitative data refers to any information that can be quantified, counted or measured, and given a numerical value. Qualitative data is descriptive in nature, expressed in terms of language rather than numerical values.
5 0
2 years ago
HELP I WILL GIVE BRAINLIEST<br> The first picture with a bunch of numbers is the data set
anzhelika [568]
Beijing is the beijjng

8 0
2 years ago
Evaluate. Write your answer in simplified, rationalized form. Do not round.
borishaifa [10]

Answer:

  cos(45°) = (√2)/2

Step-by-step explanation:

The cosine of 45° is the x-coordinate of the point on the unit circle where the line y=x intersects it. That is, it is the positive solution to the equation ...

  x^2 +x^2 = 1

  x^2 = 1/2 = 2/4 . . . . . collect terms, divide by 2, express the fraction with a square denominator

  x = √(2/4) . . . . . . take the square root

  x = (√2)/2 . . . . . simplify

The cosine of 45° is (√2)/2.

3 0
2 years ago
2 people answer this so i can give one of you brainliest2 people answer this so i can give one of you brainliest2 people answer
Furkat [3]

Answer:

ummmmm ok u wanted someone to answer

Step-by-step explanation:

also do u have any song ideas

4 0
3 years ago
Read 2 more answers
Solve the problem. Use the Central Limit Theorem.The annual precipitation amounts in a certain mountain range are normally distr
bazaltina [42]

Answer:

0.8944 = 89.44% probability that the mean annual precipitation during 25 randomly picked years will be less than 112 inches.

Step-by-step explanation:

To solve this question, we use the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Mean of 109.0 inches, and a standard deviation of 12 inches.

This means that \mu = 109, \sigma = 12

Sample of 25.

This means that n = 25, s = \frac{12}{\sqrt{25}} = 2.4

What is the probability that the mean annual precipitation during 25 randomly picked years will be less than 112 inches?

This is the p-value of Z when X = 112. So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{112 - 109}{2.4}

Z = 1.25

Z = 1.25 has a p-value of 0.8944.

0.8944 = 89.44% probability that the mean annual precipitation during 25 randomly picked years will be less than 112 inches.

7 0
3 years ago
Other questions:
  • Number 16 a b and c please
    5·1 answer
  • Find the slope of the line parallel to y=-2/3x +4/5
    5·1 answer
  • The lines shown below are perpendicular. If the green line has a slope of
    5·1 answer
  • Which expression is equivalent to SquareRoot -80
    6·1 answer
  • Find the domain of the graphed function A. 2 2 C. 1&lt;= x &lt;= 5 D. x is all real numbers
    8·1 answer
  • 1567÷135<br><br>plz help 50 points ​
    7·2 answers
  • I need help with this question!
    13·1 answer
  • Can u tell me the answers? please quick
    8·1 answer
  • How do I solve this question?​
    13·1 answer
  • A student finds the sum of the angle measures in an octagon by multiplying 7 • 180°. What is the student's error?​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!