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dexar [7]
3 years ago
11

Please help 33-40, thanks!

Mathematics
1 answer:
kogti [31]3 years ago
6 0

33. -8 belongs to:

  • Set of real numbers; all rational and irrational numbers
  • Set of integers; positive and negative whole numbers

34. 14 belongs to:

  • Set of natural numbers; all positive whole numbers
  • Set of real numbers; all rational and irrational numbers

35. 9.23 belongs to:

  • Set of real numbers; all rational and irrational numbers

36. 1\frac{5}{9} belongs to:

  • Set of real numbers; all rational and irrational numbers

37. Zero (0) belongs to:

  • Set of Integers; all positive and negative whole numbers
  • Set of real numbers; all rational and irrational numbers

38. -1 belongs to:

  • Set of integers; all positive and negative whole numbers
  • Set of real numbers; all rational and irrational numbers

39. 1/2 belongs to:

  • Set of real numbers; all rational and irrational numbers

40. 0.3 where 3 is recurring belongs to:

  • Set of real numbers; all rational and irrational numbers


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The sum of the digits of a two-digit number is 12. The number formed by reversing the digits is 54 more than the original number
andreyandreev [35.5K]

Answer:

39

Step-by-step explanation:

let the 2 digit number be ab = 10a + b ( considering place value )

The reversed  2 digit number is ba = 10b + a

The sum of the 2 digit number is

a + b = 12 ( subtract b from both sides )

a = 12 - b → (1)

Expressing as an equation

ba = ab + 54 , that is

10b + a = 10a + b + 54

Substitute a = 12 - b into the equation

10b + 12 - b = 10(12 - b) + b + 54 , simplify both sides

9b + 12 = 120 - 10b + b + 54

9b + 12 = - 9b + 174 ( add 9b to both sides )

18b + 12 = 174 ( subtract 12 from both sides )

18b = 162 ( divide both sides by 18 )

b = 9

Substitute b = 9 into (1)

a = 12 - 9 = 3

Thus

the original 2 digit number = ab = 39

The reversed 2 digit number = ba = 93

which is 54 more than the original number

7 0
3 years ago
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Answer:

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Which describes the calculations that could be used to solve this problem?
Darya [45]

Answer:

A.

Subtract 37 – 13. Then divide the difference by 4.

Step-by-step explanation:

After the box:

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No. of bags:

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4 0
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morpeh [17]

Answer:

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Step-by-step explanation:

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Aleks [24]

Answer:

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Step-by-step explanation:

The base of the silo is a circle

Rea of the base of the silo = πr²

r is the radius of the silo

Given

radius r = 14m

Area of the base of the silo = π(14)²

Area of the base of the silo = 3.14(196)

Area of the base of the silo = 615.44

<em>Hence the area of the base of the silo is 615.44m²</em>

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3 years ago
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