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Alexxx [7]
3 years ago
12

What is the solution, please?

Mathematics
1 answer:
Anna11 [10]3 years ago
5 0

Answer:

x = 6

y = -9

Step-by-step explanation:

Here, we want to solve the simultaneous equation using the substitution method

from the first equation;

x = -3-y

Put this in the second equation

-3-y + 2y = -12

-3 + y = -12

y = -12 + 3

y = -9

Recall;

x = -3-y

x = -3-(-9)

x = -3 + 9

x = 6

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The angles of a qaudileteral are x,2x,100 and 110 degress find the value of 2x
Naya [18.7K]

Step-by-step explanation:

Hey there!!!!

We generally sum up all the angles to get 360° as per given in our question.

Here, in your question, we have values as,

x, 2x, 100°, 110°.

(We have 360° as the sum quadrilateral).

So, x° + 2x° + 100°+110° = 360°

3x°+210°= 360°

3x° = 360° - 210°

or, 3x° = 150°

x =  \frac{15 0 }{3}

Therefore the measure of 2x is (2×50)°=100°.

<em><u>Hope</u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

8 0
4 years ago
Read 2 more answers
Please help me :)
Mrrafil [7]

Answer:

Deandre runs 4 miles in 30 minutes

Deandre runs 1 mile in 30/4 minutes=7.5minutes

Deandre runs 4x7.5 miles in 48 minutes

                      =30miles

Step-by-step explanation:

3 0
3 years ago
Use the number line to add the fraction. Pls helppp
PtichkaEL [24]

Answer: 1/6

-1/2 also equals -3/6

2/3 also equals 4/6

Using the number line, start at -1/2. Then, since the distance from one dash to the next on the line equals 1/6, you will move 4 spaces to the right. That should give you 1/6.

7 0
4 years ago
Hi good day plss help me plssssssssss i need yoyre help now plss​
qaws [65]

Answer:

6.c 7.c 8. b 9. a 10. a

Step-by-step explanation:

6=c as 39.10-19.56

7. 89.2-78.6

8. 8.03-5.1

9. 40.98-15.6

10.55.6-47.5

6 0
3 years ago
Solve for y. 2y - x = 3 4 (-y + 1) A) y = 4x + 3 B) y = 4x - 3 C) y = 4x + 3 11 D) y = 4x - 3 11 E) y = - 4x + 3 11
dmitriy555 [2]

Answer:

C is the answer

C ) y = \frac{4 x + 3}{11}

Step-by-step explanation:

2 y - x = \frac{3}{4} ( -y + 1)

(2 y - x ) 4 = 3 ( -y +1)

8 y - 4 x = -3 y + 3

8 y + 3 y = 4 x + 3

     11 y = 4 x + 3

∴ y = \frac{4 x +3}{11}

7 0
3 years ago
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