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
hodyreva [135]
2 years ago
6

Need answer to these 3 70 points

Mathematics
1 answer:
avanturin [10]2 years ago
4 0

Answer:

1.a

2.e

3.e

Step-by-step explanation:

You might be interested in
Help? pls?? I've got the first part, just need a lil help
OlgaM077 [116]

Find the time it will take:

195 miles / 50 miles per hour = 3.9 hours.

1 hour = 60 minutes:

0.9 hours x 60 = 54 minutes.

3.9 hours = 3 hours and 54 minutes.

Add 3 hours and 54 minutes to the time it leaves:

3:30 pm + 3 hours = 6:30 PM

6:30 + 54 minutes = 7:24 PM

8 0
3 years ago
Why is 1 + (−5) equal to −4? PLEASE HELP
AfilCa [17]

Answer:

Since the -5 is a bigger number than 1 you would keep the negative and carry it to the -4.

Step-by-step explanation:

7 0
3 years ago
The mean height of women in a country (ages 20-29) is 64 4 inches A random sample of 50 women in this age group is selected What
Simora [160]

Answer:

0.0721 = 7.21% probability that the mean height for the sample is greater than 65 inches.

Step-by-step explanation:

To solve this question, we need to understand 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 64.4 inches, standard deviation of 2.91

This means that \mu = 64.4, \sigma = 2.91

Sample of 50 women

This means that n = 50, s = \frac{2.91}{\sqrt{50}}

What is the probability that the mean height for the sample is greater than 65 inches?

This is 1 subtracted by the p-value of Z when X = 65. So

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

By the Central Limit Theorem

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

Z = \frac{65 - 64.4}{\frac{2.91}{\sqrt{50}}}

Z = 1.46

Z = 1.46 has a p-value of 0.9279

1 - 0.9279 = 0.0721

0.0721 = 7.21% probability that the mean height for the sample is greater than 65 inches.

8 0
2 years ago
What is the equation of the following line? Be sure to scroll down first to see all answer options.
Katyanochek1 [597]

Answer:

The answer is a

Step-by-step explanation:

Using point (0,0) and (3,-9)

Slope of the line = -9-0/3-0 = -9/3 = -3

Equation of the line using point (0,0)

y - 0 = -3(x -0)

y= -3x

Hope this helps.

5 0
2 years ago
Are all triangles prisms or pyramids
Umnica [9.8K]

Answer:

No not all of them.

Step-by-step explanation:

Triangles can be 2d meaning like a flat triangle.

8 0
3 years ago
Other questions:
  • On a loaf of bread, there is a patch of mold. Every day, the patch doubles in size. If it takes 40 days for the patch to cover t
    14·1 answer
  • A volleyball curt is 61 feet lenght and 21 feet wide. How much rope will you use to mark the outline on the court?
    13·1 answer
  • Daniel sold his washing machine for $829. He orignally paid $975 for it. What is Daniel's percentage loss?
    6·1 answer
  • In the figure, AB¯¯¯¯¯∥CD¯¯¯¯¯ and m∠2=60°. What is m∠6?
    13·1 answer
  • In a test tube, you have 4ML of oil and 6 ML of water. What percentage of the liquid is oil?
    11·2 answers
  • Can you please ans me?? ​
    13·2 answers
  • What is (5/4)³ ? Just asking-
    10·2 answers
  • A(0, 1), B(4,1), C(1, 2), D(1,6): AB and CD
    6·1 answer
  • Find the area of the figure below
    15·1 answer
  • I need help with this problem if anyone can help me please do thanks;)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!