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Tems11 [23]
3 years ago
15

Find two positive numbers such that the sum of the first and twice the second is 88

Mathematics
1 answer:
Juli2301 [7.4K]3 years ago
7 0

the 2 numbers are 8 and 40

40*2 = 80 +8 = 88

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The average age of 15 students is 16 years. If teacher’s age is included the average increases by 1. Find teacher’s age. (a) 30
Mrac [35]

Answer:

Age of teacher = 32 years

Step-by-step explanation:

Average age of 15 students = 16 years

Sum of age of 15 students = 16 * 15 = 240 years

Average of age 15 students and a teacher = 17 years

Sum of age  15 students and a teacher = 17 * 16 =  272 years

Age of teacher = 272 - 240 = 32 years

4 0
3 years ago
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Find the difference 9 1/3 - 2/3
olga2289 [7]
Answer:  9 1/3 - 2/3 =  8  2/3 .
___________________________________

Note:  If the answer were "8 1/3" ; 

then:  "8 1/3 + 2/3 =? 9 1/3 ? "  

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Try "8 2/3"  → "8 2/3 + 2/3 =? 9 1/3?" ?? ; 
        
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 So, the answer is:  "8  2/3" .
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Another method:
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Given the problem:  "<span>9 1/3 - 2/3 " ;
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Note that:  "2/3 = 1/3 + 1/3"
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So, "</span><span>9 1/3 - 2/3 = 9 1/3 - (1/3 + 1/3) = 9 1/3 - 1/3 - 1/3 = ?
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   Start with:  "</span>9 1/3 - 2/3" = 9.  Then 9 - 1/3 = 8 3/3 - 1/3 = 8 2/3.
<span>______________________________________________________
</span>Another method:
____________________________
Given the problem:  
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  "9 1/3 - 2/3 = ?? " ;
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  Convert "9 1/3" into "28/3" ;  ("3*9 = 27"); ("27+1=28");
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_________________________________________________________
  So, we rewrite as:  
_____________________________________
   28/3 - 2/3 = (28 - 2) / 3 = 26/3 ; or, 8  2/3 .
__________________________________________________
3 0
3 years ago
In a truncated graph, part of the scale is cut off, or missing.
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3 years ago
Please help me!!!!!!!!!
Serga [27]

Answer:

Step-by-step explanation:

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= 23
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3 years ago
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