Answers:

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Explanation:

Note we subtract 3 off the previous term (t1) to get the next term (t2). Each new successive term is found this way

and so on. This process may take a while to reach 
There's a shortcut. The nth term of any arithmetic sequence is 

We plug in  and simplify
 and simplify

Then we can plug in various positive whole numbers for n to find the corresponding  value. For example, plug in n = 2
 value. For example, plug in n = 2

which matches with the second term we found earlier. And,

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The notation  refers to the sum of the first ten terms
 refers to the sum of the first ten terms 
We could use either the long way or the shortcut above to find all  through
 through  . Then add those values up. Or we can take this shortcut below.
. Then add those values up. Or we can take this shortcut below.

The sum of the first ten terms is -85
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As a check for  , here are the first ten terms:
, here are the first ten terms:
- t1 = 5
- t2 = 2
- t3 = -1
- t4 = -4
- t5 = -7
- t6 = -10
- t7 = -13
- t8 = -16
- t9 = -19
- t10 = -22
Then adding said terms gets us...
5 + 2 + (-1) + (-4) + (-7) + (-10) + (-13) + (-16) + (-19) + (-22) = -85
This confirms that  is correct.
 is correct.
 
        
             
        
        
        
You said  X = (5y+1) / (y-2)
Multiply each side by (y-2): 
X(y-2) = (5y+1)
Eliminate parentheses:
Xy - 2X = 5y + 1
Add  2X  to each side:
Xy = 5y + 1 + 2X
Subtract  5y  from each side:
(X-5)y = 1 + 2X
Divide each side by  (X-5):
<em>y = (1+2X) / (X-5)  </em>
 
        
                    
             
        
        
        
You would use PEMDAS
But since any number divided by 1 is the number by which it is divided by then you can eliminate that. Now your problem looks like this:
8✖️4➕9✖️56➕57
Since there are no parentheses or exponents then you would multiply. 
8✖️4= 32
32➕9✖️56➕57
Then multiply the other multiplication problem.
9✖️56= 504
32➕504➕57
Now you can add all of the numbers together 
32➕504=536
536➕57=593
Your answer is 593
Hope this helps! :3
        
                    
             
        
        
        
Answer:
i cant see the link try reposting
Step-by-step explanation:
 
        
             
        
        
        
Answer:
none
Step-by-step explanation:
No choice is correct.
The original expression has 560 x 70, the product of 560 and 70 inside the parentheses.
(560 x 70) ÷ 10 is 10 times smaller than 560 x 70
None of the choices show 560 x 70. They show 560 + 70 and 560 - 70.
Answer: none