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r-ruslan [8.4K]
3 years ago
9

Simplify the following expression.

Mathematics
2 answers:
kicyunya [14]3 years ago
7 0

Answer:

it is C.1/49

Step-by-step explanation:

Tom [10]3 years ago
7 0

Answer:

the answer is c

Step-by-step explanation:

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Savatey [412]
2x=10
Divide both sides by 2 so x=5 (Because 10 divided by 2 is 5 and 2x turns into just x)
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2 years ago
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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
How do you work this?
allochka39001 [22]

Answer:

x = 60

Step-by-step explanation:

That square on the angle means 90 degrees so since the other angle is 30 that means x has to be 60

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2 years ago
The sum of five consecutive positive integers is 2020. Find the largest of these numbers.
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Answer:

406

Step-by-step explanation:

Five consecutive positive integers = x, (x+1), (x+2), (x+3), (x+4)

x + (x+1) + (x+2) + (x+3) + (x+4) = 2020

5x + 10 = 2020

5x = 2020-10

5x = 2010

x = 2010÷5

x = 402

The largest of the number is = x+4

x+4 = 402 + 4 = 406

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it arthmetic and 589166

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