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Mice21 [21]
3 years ago
9

Need help getting stuck on this problem

Mathematics
1 answer:
stepan [7]3 years ago
3 0

Answer:

  • Variable x in first equation

Step-by-step explanation:

<u>Given system</u>

  • x = 5y - 1
  • x + 2y = 13

Variables in this system are x and y.

Isolating a variable means rearranging the equation so that a variable of our interest is on its own in one side of the equal sign.

We see <u>variable x is isolated </u>in the first equation.

In the second equation both of the variables are on the same side so they are not isolated.

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The population mean and standard deviation are given below. Find the required probability and determine whether the given sample
USPshnik [31]

Answer: Not unusual.

Step-by-step explanation:

We know that the  z-scores lower than -1.96 or higher than 1.96 are considered as unusual.

Given : Sample size : n= 65

Sample mean = \mu= 212

Standard deviation : \sigma=5.8

Formula for z-score : z=\dfrac{x-\mu}{\sigma}

At x= 213

z=\dfrac{213-212}{5.8}=0.172413793103\approx0.17

Since , -1.96< 0.17 <1.96

It means the probability of a sample mean being greater than 213 is not unusual.

7 0
3 years ago
Help‼️‼️the questions is on the paper.
morpeh [17]
Part 1: Yes because each input has 1 unique output.
Part 2: The domain is [1, 2, 3, 4, 5]
5 0
3 years ago
Over a 12 hour period the students estimate that 2,400 bees will leave the hive. How many bees should they expect to travel west
vazorg [7]
240 divide it 

2400/10

hope this helps

8 0
3 years ago
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Refer to the information in number 1 above to answer this question and exercise #6 below. Write an equation expressing your mont
joja [24]
Any pictures t go along with this so that it will help me give you a better answer?
3 0
4 years ago
Someone help me pls!
Ira Lisetskai [31]

Answer:

You save $0.09 at Quick Mart for price per apple

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Quick mart = 1.17/3 = $0.39 per apple

Shop & Save = $0.48

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You save $0.09 per apple at Quick Mart

-Chetan K

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