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aleksandrvk [35]
3 years ago
11

2x-3y=-1, 2x+y=11solve the system equation

Mathematics
1 answer:
agasfer [191]3 years ago
4 0

Answer:

x = 4, y = 3

Step-by-step explanation:

   2x - 3y = -1

-   <u>2x + y =  11</u>

         -4y = -12

            y = 3

solve for 'x':

2x -3(3) = -1

2x - 9 = -1

2x = 8

x = 4

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3 years ago
Please help! I will mark you as brainliest!
Dimas [21]

Answer:

36.6 cm

Step-by-step explanation:

We have the rectangle upright and the rectangle on its side.

Counting the sides starting from the lower left vertex and going clockwise.

7 + 4.3 + (7 - 4.3) + 7 + 4.3 + 7 + 4.3

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PilotLPTM [1.2K]
Answer : C

The perimeter is all the sides added up, lets check C.

C states that 2 sides have a measure of 9, and two sides have a measure of 4.

9+9 = 18  4+4 = 8

18+8 = 26

The question states that the perimeter is 26 so this makes sense, now lets check our area.

Area = width * length

9 * 4 = 36

The question states that the area must equal 36, and it does therefore you correct answer is C
5 0
3 years ago
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Gnesinka [82]
<h2><u>Answer:</u></h2>

Pi = 3.14

Diameter (d) = 86 cm

•°• Radius (r) = 86 ÷ 2 = 43 cm (radius is 1/2 of diameter)

Area of the circle = ?

Formula,

\pi( {r})^{2}

Substitute the value of 'r' & pi in the formula.

\pi(43) {}^{2}  \\ =  3.14 \times 43 {}^{2}  \\  = 3.14 \times 1849 \\  = 5805.86  \:  \: cm {}^{2}

⎆ The area of the circle is about <u>5</u><u>8</u><u>0</u><u>5</u><u>.</u><u>8</u><u>6</u><u> </u>cm² (approx.)

5 0
3 years ago
Boris chosen three different numbers. The sum of the numbers is 36. One of the numbers is a cube number the other two numbers ar
lilavasa [31]

Answer:

27,4,5

Step-by-step explanation:

27³=3

4×5=20

27+4+5=36

8 0
3 years ago
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