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UNO [17]
2 years ago
6

The difference of twice a number and 8 is greater than 28.

Mathematics
1 answer:
notka56 [123]2 years ago
3 0

Answer:

x>18.

Step-by-step explanation:

The word problem describes the equation below, where x is "a number".2x-8>28

This inequality can be solved by first adding 8 to the both sides:

2x>36

Then, divide both sides by 2 to isolate x.

x>18

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Answer:

A dime is what fraction of a dollar? Since ten dimes equals one dollar, then one dime is 1/10 of a dollar.

Step-by-step explanation:

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How many fourths are equivalent to 2\8
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Answer:

1/4

Step-by-step explanation:

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Kevin and Randy Muise have a jar containing 80 ​coins, all of which are either quarters or nickels. The total value of the coins
SCORPION-xisa [38]

Answer:

  • 39 quarters and 41 nickels

Step-by-step explanation:

Let the number of quarters be x and nickels be y.

<u>Given:</u>

  • Quarter is 25 cents
  • Nickel is 5 cents
  • Number of coins is 80
  • Total amount is $11.80 = 1180 cents

<u>We have equations:</u>

  • x + y = 80
  • 25x + 5y = 1180

<u>Solve the system by elimination, subtract 5 times the first equation from the second one:</u>

  • 25x + 5y - 5x - 5y = 1180 - 80*5
  • 20x = 780
  • x = 780/20
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<u>Find the value of y:</u>

  • 39 + y = 80
  • y = 80 - 39y = 41

<u>Verify:</u>

  • 25*39 + 5*41 = 975 + 205 = 1180
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