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enot [183]
3 years ago
9

a high school athletic department bought 40 soccer uniforms at a coast of $3,000. after soccer season, they returned some of the

uniforms but only received $40 per uniform. what was the difference between what they paid for each uniform and what they got for each return?
Mathematics
1 answer:
sdas [7]3 years ago
7 0
They paid 3,000 / 40 = 75$ each
they got 40 $ in return 
making the difference 75$ - 40$ = $35
$35 <span />
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In a class of 55 21 study physics 24 study geography and 23 study economics and physics. if x students study all three subjects
Rus_ich [418]

The total number of students who studied only two subjects is 13.

The given parameters:

  • <em>Total number of students, n = 55 </em>
  • <em>Number of physics students = 21</em>
  • <em>Number of geography students = 24</em>
  • <em>Number of economics students = 23</em>
  • <em>Number of students for the 3 subjects, = x</em>
  • <em>Number of students who studied non = 2x</em>

The number of students who studied only two subjects can be determined by applying overlapping three sets formula as shown below;

Total = n(phy) + n(geo) + n(econ) + n(none)- n(double) - 2(all \ subjects)\\\\55 = 21 + 24 + 23 + 2x-n(double) - 2(x)\\\\55 =  68- n(double)\\\\n(double) = 68-55\\\\n(double) = 13

Thus, the total number of students who studied only two subjects is 13.

Learn more about overlapping three sets here:  brainly.com/question/2041029

3 0
2 years ago
17.
Inessa05 [86]

Answer:

17. 3ab + 8a

18. -6c + 6

19. 8x + 4

20. x - 3

21. 12x - 4

8 0
3 years ago
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eimsori [14]

Answer:

$8.65

Step-by-step explanation:

1.25+4.75+2.50=8.5

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3 years ago
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