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lina2011 [118]
3 years ago
5

Help me out please!!!!!! I’d appreciate it so much (:

Mathematics
2 answers:
Flura [38]3 years ago
7 0

Answer:

(\frac{11}{7},-\frac{1}{7})

Step-by-step explanation:

2x + y = 3 ==> 3(2x + y = 3) ==> 6x + 3y = 9

x - 3y = 2

6x + 3y = 9

 x  - 3y = 2

7x = 11

/7   /7

x = \frac{11}{7}

2x + y = 3

2(\frac{11}{7}) + y = 3

\frac{22}{7} + y = 3

-\frac{22}{7}     -\frac{22}{7}

y = -\frac{1}{7}

Final answer (  \frac{11}{7}, -\frac{1}{7})

Hope that helps!

lyudmila [28]3 years ago
6 0

Answer:

x = 11/7 y = -1/7

Step-by-step explanation:

2x + y = 3

2x + y - 2y = 3 - 2y

y = 3 - 2x

x - 3(3 - 2x) = 2

x - 9 + 6x = 2

x - 9 + 6x + 9 = 2 + 9

x + 6x = 11

7x = 11

7x / 7 = 11/7

x = 11/7

2(11/7) + y = 3

22/7 + y = 3

22/7 + y - 22/7 = 3 - 22/7

y = -1/7

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Find the number that is 35 greater than twice the opposite of itself?
Zanzabum

Answer:

-2x+35

Step-by-step explanation:


4 0
3 years ago
What is the approximate length of arc s on the circle below? 330 degrees central angle radius 12 feet
Aneli [31]

Answer:

69.08\ ft

Step-by-step explanation:

step 1

Find the circumference of the circle

The circumference is equal to

C=2\pi r

we have

r=12\ ft

substitute

C=2\pi (12)

C=24\pi\ ft

step 2

Find the approximate length of arc s

we know that

The circumference of the circle subtends a central angle of 360 degrees

so

using proportion

Find out the length of arc for a central angle of 330 degrees

\frac{24\pi}{360}=\frac{x}{330}\\\\x=24\pi(330)/360

x= 22\pi\ ft ----> exact value

assume

\pi =3.14

22\pi\ ft=22(3.14)=69.08\ ft ----> approximate value

3 0
3 years ago
Attached Math question document. Find the value to complete this calculation.
kvasek [131]

To find the missing value divide both sides by -7:

28/-7 = 4

The missing value is 4

5 0
3 years ago
Read 2 more answers
Factor to solve the equation
Gnom [1K]
Could you post the equation? I’d be happy to help!
5 0
3 years ago
How do you write a polynomial in standard form that represents the area of the shaded region of a rectangle when on the outside
-BARSIC- [3]
F ( x ) = ( x + 7 ) ( x + 4 ) - ( x + 5 ) ( x + 2 ) =
= ( x² + 4 x + 7 x + 28 ) - ( x² + 2 x + 5 x + 10 ) = 
= ( x² + 11 x + 28 ) - ( x² + 7 x + 10 ) =
= x² + 11 x + 28 - x² - 7 x - 10 = 4 x + 18
Answer:
The area of the shaded region is 4 x + 18.
8 0
3 years ago
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