Solve the system of equations by substitution y= 3x - 10 3x + 2y = 16
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Answer:
Proved that .
Step-by-step explanation:
We have to prove that
Now, Left hand side
=
= {Since we know the formula (a + b)² = a² + 2ab + b²}
=
{Since }
=
=
{Since we know the identities:
and
}
= Right hand side
Hence, proved.
Lets represent the side of the square as s , since we know the area is 36. write s
the square root of 36 is 6. So, we know the side is 6. The formula for perimeter is P= s+s+s+s , but since it is a square and all the sides are equal, for a perimeter of a square you can do p= 4s , now substitute 6 for s to get 4(6)=24 so the perimeter of a square would be 24 inches