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PolarNik [594]
3 years ago
8

-4x-10y=-2 4x+ 3y=-5

Mathematics
2 answers:
Softa [21]3 years ago
5 0

My work is shown up above in the picture.

Answer : (-2,1)

My answer is definitely right. I checked my answers by using x and y into the two equations. In other words using the substitution method.

nasty-shy [4]3 years ago
3 0

Answer:

(3, 1)

Step-by-step explanation:

Next time, please include the directions:  "Find the solution of the system of linear equations using linear combinations:

-4x-10y=-2

4x+ 3y= -5

----------------

      -7y = -7, so y = 1.  If y = 1, then -4x - 10y = -2 becomes

-4x - 10(1) = -2, or

-4x + 10 = -2, or

-4x = -12.  Then x must be +3.

The solution to this system of linear equations is (3, 1).

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the parallel sides of a trapezium are such that the longer side is 4cm more than the shorter side of the distance between them i
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Answer:

32cm and 28cm

Step-by-step explanation:

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600=0.5( 4+a+a)×20

where a is the length of the shorter side

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1200=(4+2a)×20

1200÷20=4+2a

60=4+2a

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28=a.

since the longer side is 4 cm more than th shorter side , 28 +4=32

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4 years ago
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4 years ago
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Aleksandr-060686 [28]
It should be 3,000
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3 0
3 years ago
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slamgirl [31]

Answer:

a) A U B = {21,23,24,25,27,29,30,31 }

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Step-by-step explanation:

A {21,24,27,30}

B {21,23,25,27,29,31}

C {20,22,24,26,28,30,32}

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