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Dvinal [7]
4 years ago
8

If the radius of mars is about 13.7% of neptune's radius, what is the radius of neptune?

Mathematics
1 answer:
Gnesinka [82]4 years ago
8 0

You said that                                 M is 13.7% of N

In algebraic notation                    M  =  0.137 N

Divide each side by  0.137 :      N  =  M / 0.137  =  7.3 M (rounded)

Online or in a real book, you can look up the radius of Mars.
Then write it in place of 'M' in this solution, and you'll have
an actual number for the radius of Neptune.
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A stadium has 49,000 seats. Seats sell for ​$28 in Section​ A, ​$16 in Section​ B, and ​$12 in Section C. The number of seats in
romanna [79]

Answer:

  • A: 24,500
  • B: 14,300
  • C: 10,200

Step-by-step explanation:

Section A seats comprise half the seats in the stadium, so revenue from those seats at a sold-out event will total ...

  $28 × 49,000/2 = $686,000

Then the remaining revenue of $1,037,200 -686,000 = $351,200 will come from some mix of B and C seats.

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If all of the seats were C seats, the revenue would be ...

  $12 × 24,500 = $294,000

Actual revenue from those seats is $351,200 -294,000 = $57,200 more. Since each B seat contributes $4 more, there must be ...

  $57,200 / $4 = 14,300 . . . . B-section seats

Then the number of C-section seats is 24,500 -14,300 = 10,200.

There are 24,500 Section A seats, 14,300 Section B seats, and 10,200 Section C seats.

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You could write 3 equations in 3 unknowns and get the same answer.

  a + b + c = 49000 . . . . . where a, b, c are numbers of seats in A, B, and C

  a - b - c = 0

  28a +16b +12c = 1037200

The solution by your favorite method is (a, b, c) = (24500, 14300, 10200), as above.

5 0
3 years ago
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fgiga [73]

Answer:

Calculator is 2, Math book is 3, Ruler is 5, and Pencil is 4

Soultion #1 = 14

Solution #2 = -8

Step-by-step explanation:

2 x 3 = 6

3 + 5 = 8

4 x 5 = 20

2 + 4 = 6

Soultion #1 = 2 + 5 + 4 + 3 = x

7 + 4 + 3 = x

11 + 3 = x

11 + 3 = 14

Solution #2 = 3 - 4 - 2 - 5 = x

-1 - 2 - 5 = x

- 1 + (-2) - 5 = x

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7 0
3 years ago
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Why is 5.1 a rational number
Ainat [17]

Answer:

5.1 can be written as 51/10 (the quotient of the integers 51 and 10. So it is a rational number

Step-by-step explanation:

Recall that a rational number is a number that can be written as the quotient of two integer numbers.

In particular the number 5.1 can be written as 51/10 (the quotient of the integers 51 and 10. So it is a rational number.

4 0
3 years ago
If = 20, then p=<br> O A) 20-5 5<br> OB) 20 x 5<br> O'C) 20 + 5<br> OD) 20/5
nikklg [1K]
It’s A, 20-5 5

P=20-5 5
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3 years ago
The product of two decimals less than 1is less than either of the factors
poizon [28]
This is true for any decimals below 1:
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