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scZoUnD [109]
3 years ago
8

I need to simplify this expression: 4×4+4(5-2)+7

Mathematics
1 answer:
atroni [7]3 years ago
7 0

Answer:

35

Step-by-step explanation:

4x4+4(5-2)+7

=4x4+4(3)+7

=16+12+7

=28+7

=35

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Freight cars on some trains can each haul 60 tons of cargo. How many 500​-pound containers can be hauled by this type of freight
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Step-by-step explanation:

Each ton is 2000 pounds.? Convert 60 tons to pounds to get 120000 pounds and then divide it by 500

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The product of a number and -7 amounts to seven times the sum of that number and 20. Find the number.
MA_775_DIABLO [31]

Answer: -10

Step-by-step explanation:

If you put it in an equation it would be -7x=7(x+20). You would then -7x to both sides to get -14x=140. Just divide -14 on both sides to isolate x. This equates to -10. If you put -10 back into the equation then it says that 70 is 7 times larger than 10. Which it is.

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3 years ago
Rewrite each problem so that x appears on only one side
Vlad1618 [11]

Answer:

x = -5/21

Step-by-step explanation:

Step 1: Write equation

2(12x - 1) = (21x - 49)/7

Step 2: Solve for <em>x</em>

  1. Multiply both sides by 7: 14(12x - 1) = 21x - 49
  2. Distribute 14: 168x - 14 = 21x - 49
  3. Subtract 21x on both sides: 147x - 14 = -49
  4. Add 14 to both sides: 147x = -35
  5. Divide both sides by 147: x = -5/21
5 0
3 years ago
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Answer:

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3 years ago
Solve the matrix equation for X.
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See the attached picture:

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