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creativ13 [48]
4 years ago
13

SOLVE THE SYSTEM OF EQUATIONS −2x+6y=−38 3x−4y=32

Mathematics
2 answers:
WARRIOR [948]4 years ago
6 0

X= 4 and Y =-5 im not really 100% sure but its all i know

denis23 [38]4 years ago
3 0

Answer:

x = 4 and y = -5 is the solution of the system of equations

Step-by-step explanation:

The system of equations has been given as

-2x + 6y = - 38

We divide this equation by 2

-x + 3y = - 19 ----------(1)

3x - 4y = 32 ----------(2)

We multiply the equation 1 by 3 add to equation 2

3(-x + 3y) + (3x - 4y ) = - 57 + 32

-3x + 9y + 3x - 4y = - 25

5y = -25

y = -5

Now we replace y = -5 in equation 1

-x + 3×(-5) = -19

-x - 15 = -19

-x = -19 + 15 = -4

x = 4

Therefore, x = 4 and y = -5 is the solution of the system of equations.

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Answer:

C

Step-by-step explanation:

For 3 different side lengths, you need 3 different angles. That eliminates A, B and D.

A: In the case of A, The angles do not add up to 180 so this is not possible. Even if it was, the angles are all the same and the side lengths would be as well.

B: Two angles are the same, therefore, 2 sides will be the same, even though the two sides added together will be larger than the side opposite.

D: Two angles are the same. The angles add to 180. The triangle will have 2 equal sides.

C: Answer. The three given angles add to 180. They are different. Unless the side opposite 93 exceeds the length of the other 2 sides, this forms a triangle with 3 different  sides. Using other methods to calculate the answer the other 2 sides do exceed the the base length so everything is fine.  

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Answer:

A. strong negative relationship

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8 0
2 years ago
Compute: (1 2/5 +3.5÷1 1/4 )÷2 2/5 +3.4÷2 1 /8 −0.35
nikdorinn [45]

Answer:

Answer: 3

Step-by-step explanation:

Use BODMAS

<u>Step 1: Open bracket (1 2/5 +3.5÷1 1/4 )</u>

<em>Convert mixed fractions into improper fractions</em>

7/5 + 3.5 ÷ 5/4

<em>Divide 3.5 by 5/4</em>

7/5 + 2.8 = 4.2

<u>Step 2: Carry out all divisions</u>

<em>Convert mixed fraction into improper fractions</em>

4.2 ÷2 2/5 +3.4÷2 1 /8 −0.35

4.2 ÷ 12/5 + 3.4 ÷ 17/8 - 0.35

1.75 + 1.6 - 0.35

<u>Step 3: Solve</u>

1.75 + 1.6 - 0.35

3.35 - 0.35

Answer = 3

4 0
3 years ago
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