The isosceles triangle has a perimeter of 7.5 m
2 answers:
Answer:
The value of x is 2.7 and the equation used for finding the value of x is 7.5 = 2.1 + 2x.
Step-by-step explanation:
As given
The isosceles triangle has a perimeter of 7.5 m .
if the shortest side, y measures 2.1 m
In the isosceles triangle two sides of the triangle are equal .
Let us assume that the two equal sides each of length x .
Thus
Perimeter = Sum of all sides
Perimeter = x + x + y
7.5 = 2x + 2.1
7.5 - 2.1 = 2x
5.4 = 2x
x = 2.7 m
Therefore the value of x is 2.7 and the equation used for finding the value of x is 7.5 = 2.1 +2x.
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Answer:
<h2>Step-by-step explanation:
Solve the equation for y by moving 'x' to R.H.S and changing its sign
Substitute the given value of y into the equation 5x + y = 28
Solve the equation for x
Collect like terms
Move constant to R.H.S and change its sign
Subtract the numbers
Divide both sides of the equation by 4
Calculate
Reduce the numbers with 2
Now, substitute the given value of x into the equation y = 2 - x
Solve the equation for y
The possible solution of the system is the ordered pair ( x , y )
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Let's check if the given ordered pair is the solution of the system of equation:
plug the value of x and y in both equation
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Since , all of the equalities are true, the ordered pair is the solution of the system.
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