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ra1l [238]
2 years ago
9

2x-y=3 -x-y=3 what does this equal system of equations

Mathematics
1 answer:
Jet001 [13]2 years ago
3 0

Topic : Linear equations in two variables.

Given :

  • 2x - y = 3 ––– (i)
  • - x - y = 3 ––– (ii)

Solution :

Now,

(i) – (ii)

\qquad \sf \: { \dashrightarrow 2x - y - ( - x - y) = 3 - 3}

\qquad \sf \: { \dashrightarrow 2x - y  +  x  + y) = 3 - 3}

\qquad \sf \: { \dashrightarrow 3x = 0}

\qquad \bf \: { \dashrightarrow x = 0}

Now, substituting the value of x in Eq (i) :

\qquad \sf \: { \dashrightarrow 2x - y = 3 }

\qquad \sf \: { \dashrightarrow 2(0)- y = 3 }

\qquad \sf \: { \dashrightarrow 0- y = 3 }

\qquad \bf \: { \dashrightarrow  y =  - 3 }

Therefore,

  • <u>The value of x = 0 and y = -3</u>
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Answer:

-7 is your answer

Step-by-step explanation:

Isolate the variable, y. Note the equal sign, what you do to one side, you do to the other.

4 + y = -3

Subtract 4 from both sides

4 (-4) + y = -3 (-4)

y = -3 - 4

y = -7

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C. 12

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the greatest common factor between 84 and 96 is 12

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Divide the time he traveled by the distance to find how fast he travels 1 mile, then multiply that by 5 miles:


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Step-by-step explanation:

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mojhsa [17]

Side AB is longer than side FD. Option (b) is correct.

Further explanation:

Given:

The options area as follows,

(a). \overline {{\text{AB}}} and \overline {{\text{FD}}} are the same length.

(b). \overline {{\text{AB}}} is longer than \overline {{\text{FD}}}.

(c). \overline {{\text{AB}}} is shorter than \overline {{\text{FD}}}.

(d). {\text{AB}} \leqslant {\text{FD}}

Explanation:

The sides opposite to equal angles are equal.

The side opposite to greater angle is greater than the other one.

The measure of \angle {\text{DEC}} is {65^ \circ }.

The measure of \angle {\text{BCA}} is {72^ \circ }.

\angle {\text{BCA}} is greater than \angle {\text{DEC}}. Therefore, the side opposite to greater angle is greater.

Side AB is longer than side FD. Option (b) is correct.

Option (a) is not correct.

Option (b) is correct.

Option (c) is not correct.

Option (d) is not correct.

Learn more:

  1. Learn more about inverse of the function brainly.com/question/1632445.
  2. Learn more about equation of circle brainly.com/question/1506955.
  3. Learn more about range and domain of the function brainly.com/question/3412497.

Answer details:

Grade: High School

Subject: Mathematics

Chapter:Triangles

Keywords: relations, functions, all relation are functions, all functions are relations, no relations are functions, no functions are relation, one-to-one, onto, graph representation, paired, y-value, x-values, origin.

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