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almond37 [142]
3 years ago
9

Two systems of equations are shown below:

Mathematics
1 answer:
noname [10]3 years ago
4 0

Answer:

The solution of the equations in system A is,

(x,y) = (-0.8 , 2.8)

The system of equation B contains 2 identical equations or only 1 equation which will be represented by a straight line and will have infinite no. of solutions.

Step-by-step explanation:

The equations in system A are,

6x + y = -2 -----------------(1)

2x - 3y = -10 ---------------(2)

Doing   (1) \times 3 + (2)  we get,

20x = -16

⇒ x = - 0.8 --------------------(3)

From (3) putting the value of x in  (1) we get,

y = (-6) \times (-0.8) -2

  = 2.8 -----------------------(4)

So the solution is, (x , y) = (-0.8 , 2.8)

The system of equation B contains 2 identical equations or only 1 equation which will be represented by a straight line and will have infinite no. of solutions.

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each of equal sides of an isosceles triangle is 4cm greater than its height .If the base of triangle is 24 cm ,calculate the per
Montano1993 [528]
<h3><u>Answer</u><u>:</u><u>-</u></h3>

192 cm²

<h3><u>Step</u><u> </u><u>by</u><u> step</u><u> explanation</u><u> </u><u>:</u><u>-</u></h3>

Let us take the height be x , then its side = x + 4. Now half of base will be 12 cm .

<u>According</u><u> to Pythagoras Theorem :- </u>

=> base² + perpendicular ² = hypontenuse ²

=> 12² + x² = (x+4)²

=> 144 + x² = x² + 16 + 8x

=> 8x = 144-16

=> 8x = 128

=> x = 128/8

=> x = 16 cm .

Hence the height of ∆ is 16 cm .So the area will be half the product of base and altitude.

= 1/2 * 16 cm * 24cm .

= 192 cm²

<h3><u>★</u><u> </u><u>Hence</u><u> </u><u>the</u><u> </u><u>area</u><u> </u><u>of</u><u> </u><u>the </u><u>tria</u><u>ngle</u><u> is</u><u> </u><u>1</u><u>9</u><u>2</u><u> </u><u>cm²</u><u> </u><u>.</u></h3>
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A study found that average there were 566,000 tweets per hour using this data how many tweets are there per minute
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D

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Find the length of AB when A(-4,1) and B(3,-1). Round to the nearest tenth (one decimal place) if necessary.
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PLS HELP I NEED HELP NOW<br> I BEG
stepan [7]
Hello there! The area of the triangle portion is 11 square units, the area of the rectangle portion is 77 square units, and the area of the entire figure is 88 square units.

To find the area of the triangle, we can follow the formula:

A = LW/2 (which means length x width divided by 2)

Given the formula:

2 • 11 = 22

22 divided by 2 gives us 11 square units.

To find the area of the rectangle portion, we can follow the area formula:

A = LW (which means area = length x width)

Given the formula:

7 • 11 = 77 square units

To find the area of the whole figure, we add the areas of both isolated shapes:

11 + 77 = 88 square units.

Therefore, our area for the entire figure is 88 square units. If you need any extra help, let me know and I will gladly assist you.
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