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erica [24]
2 years ago
6

How many solutions does this linear system of equations have? x – 3y = 5 -3x + 9y = -7

Mathematics
1 answer:
Angelina_Jolie [31]2 years ago
6 0

9514 1404 393

Answer:

  zero

Step-by-step explanation:

Dividing the second equation by -3, it becomes ...

  x -3y = 7/3

Compared to the first equation, ...

  x -3y = 5

we see that it is <em>inconsistent</em>. No values of the variables can satisfy both equations. There are no solutions.

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For problem 8, find the area of the shaded region. The polygon is a regular polygon. please show work.​
MissTica

Answer:

34.7791 [unit²].

Step-by-step explanation:

1) area of the circle is:

πr²;

2) area of the regular polygon is:

6*r²√3*0.25=1.5√3r²;

3) the required area:

πr²-1.5√3r²=r²(π-1.5*√3)=64*(3.1415-1.5*1.7321)=34.7791

4 0
2 years ago
Need help with this math​
belka [17]

Answer:

D = 114t/v

Step-by-step explanation:

Cross multiply

114t = vD

Divide both sides by v

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6 0
3 years ago
FOR 100 POINTS!!!!!!!!!!!<br><br>Solve the equation. <br><br><br>3(4x + 4) = 2(5x + 9) - 12
Tatiana [17]

Answer:

<h3>X=-3</h3>

Step-by-step explanation:

Isolate x on one side of the equation.

<u><em>DISTRIBUTIVE PROPERTY</em></u>

A(B+C)=AB+AC

A(B-C)=AB-AC

3(4x+4) (First, expand.)

3*4x=12x

3*4=12

12x+12

2(5x+9)-12

2*5x=10x

2*9=18

10x+18

18-12=6

12x+12=10x+6

12x+12-12=10x+6-12 (Subtract 12 from both sides.)

6-12 (Solve.)

12-6=6

12x=10x-6

12x-10x=10x-6-10x (Subtract 10x from both sides.)

12x-10x (Solve.)

12x-10x=2x

2x=-6

2x/2=-6/2 (Then, divide by 2 from both sides.)

-6/2 (Solve.)

-6/2=-3

x=-3

As a result, the final answer is x=-3.

6 0
3 years ago
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umka2103 [35]

Answer:

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Step-by-step explanation:

5 0
3 years ago
Simplify -8 (2-3w) - 5w
Vika [28.1K]
The answer is -16 + 19w
First distribute -8, then collect like terms and simplify.
-16 + 24w - 5w
=-16 + 19w
7 0
3 years ago
Read 2 more answers
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