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elixir [45]
3 years ago
11

Solve the system by the elimination method? -5x-2y=2 6x-2y=24

Mathematics
2 answers:
Ivahew [28]3 years ago
4 0
X = 22
Make either x or y opposites and then solve.

Hope this helps.
Mnenie [13.5K]3 years ago
4 0
<span>-5x-2y=2
6x-2y=24

Notice that -2y appears in both equations.  Multiply the first equation by -1, obtaining 

5x + 2y = -2               and then adding the second equation to this result:
6x  -2t   = 24
-----------------
11x        = 22, so x = 2.  Now subst. 2 for x in either of the original equations to find the value of y.

6(2) - 2y = 2 becomes 2y = 12-2, or 2y = 10, or y = 5.

Solution is (2,5).  You MUST check this, however.</span>
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Among fatal plane crashes that occurred during the past 55 ​years, 415 were due to pilot​ error, 96 were due to other human​ err
azamat

Answer:

Relative frequency:

\text{Pilot error}=415/1370=0.30\\\\\text{Other human error}=96/1370=0.07\\\\\text{Weather}=169/1370=0.12\\\\\text{Mechanical problems}=622/1370=0.45\\\\\text{Sabotage}=68/1370=0.05\\\\

The most serious threat to aviation safety is, according to this data, "mechanical failures". It can be improved by more rigorous inspection and better maintenance policies and execution.

Step-by-step explanation:

We have the data for fatal plane crashes. The sum of plane crashes is

We can calculate the relative frequency as:

\text{Pilot error}=415/1370=0.30\\\\\text{Other human error}=96/1370=0.07\\\\\text{Weather}=169/1370=0.12\\\\\text{Mechanical problems}=622/1370=0.45\\\\\text{Sabotage}=68/1370=0.05\\\\

We can see that the most frequent cause is "mechanical problems", with a relative frequency of 0.45.

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You place a mirror on the ground 6 feet from the lamppost. you move back 3 feet and see the top of the lamppost in the mirror. i
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A home is to be built on a 56 feet 9 in wide lot. The house is 5 feet 5 in from the side of the lot and is 34 feet 10 in wide.
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<span><span>Remainder side = Total lot - house -other side
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