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Step2247 [10]
3 years ago
14

Twice a number minus 4 is less than three times number

Mathematics
2 answers:
dalvyx [7]3 years ago
8 0
Let the number be x
twice a number: 2x 
minus 4: -4
three times a number: 3x
less than symbol: <

form the equation exactly how the sentence is written to give:
2x - 4 < 3x

rearrange by taking 2x away from each side to give an expression for x:
-4<x
Zina [86]3 years ago
6 0
2x - 4 < 3x

Just follow the question.
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3 years ago
Translate the following phrase to a mathematical expression: a number times fifteen.
crimeas [40]

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3 years ago
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Would the answer for 36 be $9.88 or $9.75?
ludmilkaskok [199]

total bill before any discounts $13.

she is a student, so she gets 20% off.

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so she's really getting 20% + 5% off, namely 25% off her bill.

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6 0
3 years ago
7x + 2y=24<br> 8x + 2y=30
Bumek [7]

Answer:

x=6 y=-9

Step-by-step explanation:

  • Layer the equations on each other as you would in a subtraction problem:

               8x + 2y=30

               7x + 2y=24  

  • Subtract the equation just like you would normally. This should leave 1x=6 or x=6.
  • Now that you have your x value, plug it in as x for one of the equations. For the 2nd equation, this leaves:

               42+2y=24 then

               2y=-18 then

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  • Double check your y value by plugging x=6 into the first equation. This should also leave y=-9.

3 0
3 years ago
What is 12/7 as an mixed number ??
joja [24]

Answer:

1 5/7

Step-by-step explanation:

4 0
2 years ago
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