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
Shalnov [3]
3 years ago
5

Please help meh!!!!!!!!!!!!!!!! !

Mathematics
2 answers:
tigry1 [53]3 years ago
7 0

Answer:

70/100

0.7

70%

Step-by-step explanation:

Kay [80]3 years ago
6 0

fraction: 70/100 or 7/10

decimal: 0.7

percent: 70%

You might be interested in
Free 100 points if u know what dis is
kvasek [131]

Answer:

This is a picture of You

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Solve the following system of equations by the substitution method.
Dahasolnce [82]

Answer:

Step-by-step explanation:

5x=y+6   --------- equ 1

2x-3y=4  -------- equ 2

5x - 6 = y

y = 5x - 6

substitute in equ 2

2x-3(5x - 6) =4

2x - 3*5x + 3*6 = 4

2x - 15x + 18 = 4

- 13x = 4 - 18

-13x = -14

x = -14/-13

x = 14/13

substitute  in equ 1

5*14/13 = y+6  

70/13 - 6 = y

y =  ( 70 - 78)/13

y = -8/13

6 0
2 years ago
Please help !! If you help i’ll give 5 stars
sladkih [1.3K]

Answer:

Imaginary

Step-by-step explanation:

6 0
2 years ago
A small town has 2000 families. The average number of children per family is mu = 2.5, with a standard deviation sigma = 1.7. A
Nikitich [7]

Answer:

Let X the random variable that represent the number of children per fammili of a population, and for this case we know the following info:

Where \mu=2.5 and \sigma=1.7

We select a sample of n =64 >30 and we can apply the central limit theorem. From the central limit theorem we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

And for this case the standard error would be:

\sigma_{\bar X} = \frac{1.7}{\sqrt{64}}= 0.2125

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

The central limit theorem states that "if we have a population with mean μ and standard deviation σ and take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed. This will hold true regardless of whether the source population is normal or skewed, provided the sample size is sufficiently large".

Solution to the problem

Let X the random variable that represent the number of children per fammili of a population, and for this case we know the following info:

Where \mu=2.5 and \sigma=1.7

We select a sample of n =64 >30 and we can apply the central limit theorem. From the central limit theorem we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

And for this case the standard error would be:

\sigma_{\bar X} = \frac{1.7}{\sqrt{64}}= 0.2125

6 0
3 years ago
Which one<br> also whats 473+838=
Mashutka [201]

Answer:

1,311

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Please help! Final grade of my semester!
    11·1 answer
  • How do I find the gradient of the line y=x-5
    8·1 answer
  • . Andrew is showing his work in simplifying −4.5 + 4.2 + 5.6 − 7.3. Identify any errors in his work or in his reasoning. Write f
    5·1 answer
  • Help asap plz, hehdbjdnejxjfbrjdjcnbd
    9·2 answers
  • Express the ratio in its simplest form 1\4:1\8:1\16​
    5·1 answer
  • Find the m ABC if ray BD bisects LABC.
    12·1 answer
  • A cyclist travels 4 miles in 15 minutes and then a further 6 miles in 25 minutes without stopping.
    7·2 answers
  • A company dyes two sizes of rugs. A small rug requires 4 hours for dyeing, and a medium-size rug requires 6 hours for dyeing. Th
    12·1 answer
  • What is 2 1/2 - 1 1/8
    11·1 answer
  • Jenna's rectangular garden borders a wall. She buys 80 ft of fencing. What are the dimensions of the garden that will maximize i
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!