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marysya [2.9K]
3 years ago
11

Help me pls its alzebra

Mathematics
1 answer:
sleet_krkn [62]3 years ago
3 0

Answer:

  1. 1y6
  2. 6x6y
  3. 1x6
  4. 4yx8
  5. a6b6

Step-by-step explanation:

please make me Brianlist please

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The time that a randomly selected individual waits for an elevator in an office building has a uniform distribution over the int
Elanso [62]

Answer:

The mean of the sampling distribution of x is 0.5 and the standard deviation is 0.083.

Step-by-step explanation:

The Central Limit Theorem estabilishes 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.

For the population, we have that:

Mean = 0.5

Standard deviaiton = 0.289

Sample of 12

By the Central Limit Theorem

Mean = 0.5

Standard deviation s = \frac{0.289}{\sqrt{12}} = 0.083

The mean of the sampling distribution of x is 0.5 and the standard deviation is 0.083.

7 0
3 years ago
Vishal deposits $65 into a new savings account. The account earns 7.5% interest per year. No money is added or removed
Black_prince [1.1K]

Answer:

$79.23 After 3 years

Step-by-step explanation:

Use I P R T it's a method for simple interest

I = Interest

P = Amount of money

R = Percent in decimal

T = Time in years

Answer:

I = x (we dont know yet)

P = $65

R = 7.5% = 0.075

T = 3 years

Steps:

1. Set up your numbers with the method I P R T.

2. $65 will be your amount of money.

3. 7.5% needs to be converted because you will need to multiply later on in the problem. Simply move 2 places to the left to convert your percent into a decimal.

4. They want to know the total amount of money in his account at the end of 3 years. So 3 years will be your time in years.

5. After setting up your problem you need to multiply your Amount of money x percent as decimal x time in years.

65(0.075)(3)=14.63\\ Interest\\

6. After you find your interest you need to add your amount of money + interest.

65 + 14.63 = 79.23 Money after 3 years

hope this helped

8 0
3 years ago
Which two pairs of numbers have cubes that add up to 1729? because there are two pairs of numbers to find, you should select a t
qwelly [4]
It is called the hardy Ramanujan's number, named after the Indian mathematician, Srinivasa Ramanujan, and British Mathematician G. H Hardy. 
Hardy went to visit Ramanujan while he was ill. He noticed that the number of the taxi he went in was 1729, which he thought was a dull number.

1729 = 12³ + 1³ 
1729 = 10³ + 9³ 

Fujiwara claimed that he proved there are only four numbers that have the property. Even though it seems to be true, he never has shown his proof. No other natural number, other than 1729, can be expressed as a sum of the cubes of two natural numbers in two different ways.
4 0
4 years ago
Simplify -3xy 3 + 7xy 3 + (-xy 3) + (-3xy 3).
Gnom [1K]
I thing the answer is 75 I may be wrong but that’s what I got
6 0
4 years ago
Read 2 more answers
Simplify this expression: 19 – (–8) – (–14) = ?
Ivahew [28]
Answer is B
19 - ( - 18) - ( - 14)  \\ 19 + 18  + 4 = 41
3 0
4 years ago
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