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Nadya [2.5K]
2 years ago
12

The sum of three three times a number and 77 more than the number is the same as the difference between minus−2323 n twice twice

the number. what is the​ number
Mathematics
1 answer:
ELEN [110]2 years ago
6 0
Let x = the unknown number

3 ( 3x + 77 ) = 2 x 2x - 2323
9x + 231 = 4x - 2323
5x + 231 = 2323
5x = 2092
x = 418.5

if my calculations are right the the number is 418.5. Btw the question wasn't worded properly and it took me a while to make out what the equation was
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give an example of a repeating decimal where two digits repeat. explain why your number is a rational number
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1.666666, any decimal or number that is repeating can be written in a/b format and b not equal zero is rational. Repeating decimals can be considered rational because they can be represented as a ratio of two integers. 
5 0
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Pls answer this pls pls pls btw I go to cmm
Thepotemich [5.8K]

Answer:

Mile = length

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Centimeter = length

Liter = volume

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kilogram=mass

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Step-by-step explanation:

4 0
3 years ago
Find the Volume. Use pi=3.14. Round to the nearest hundredth.
aleksandr82 [10.1K]
<h2>Volume = 4.19 inches³</h2>

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4 0
3 years ago
Two planes left simultaneously from the same airport and headed in the same direction towards another airport 3600 km away. The
ExtremeBDS [4]

Answer:

  • 800 kph
  • 600 kph

Step-by-step explanation:

<u>Equation</u>

Let s represent the speed of the faster plane. Then its travel time is ...

  time = distance/speed = 3600/s

travel time for the slower plane is ...

  time = distance/speed = 3600/(s -200)

The difference in these times is 1.5 hours, so we have ...

  3600/(s -200) -3600/s = 1.5

<u>Solution</u>

Multiplying by (2/3)s(s -200), we get ...

  2400(s) -2400(s -200) = s(s -200)

  s^2 -200s -480000 = 0 . . . . . . . . . . rewrite in standard form

  (s -800)(s +600) = 0 . . . . . . . . . . . . . factor

The positive value of s that makes a factor zero is s = 800.

<u>Conclusion</u>

The speed of the faster plane was 800 km/h; of the slower plane, 600 km/h.

_____

<em>Check</em>

The travel time for the faster plane was 3600/800 = 4.5 hours. For the slower plane, 3600/600 = 6 hours, a difference of 1.5 hours.

6 0
2 years ago
A regular hexagon is dilated by a scale factor of 7/5 to create a new hexagon. How does the perimeter of the new hexagon compare
Airida [17]
<span>It's the same ratio, 7/5.</span>
3 0
3 years ago
Read 2 more answers
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