Answer: The coefficient is 3c
Step-by-step explanation:
Answer:
Step-by-step explanation:
Multiplying x+6y=-3 with 2 so its equal to first eqn,
Eliminating,
2x + 3y = 3 (1)
2x +12y = -6 (2) (because subtracting)
------------------
-9y =9
∴y=-1
eq. y in 1
2x -3=3
2x=3+3
x=6/2
=3
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Answer:
Step-by-step explanation:
We are given the circumference. The formula for circumference is
C = πd where d is the diameter and C is the circumference.
We are given C = 53.41, so we have...
53.41 = πd
Solving for d gives us...
53.41/π = d
The formula for area of a circle is
A = π(r²) where A is the area, and r is the radius
The radius is half of the diameter, so we divide 'd' by 2 to get the radius...
r = d/2 = (53.41/π)/2 = 26.705/π
The area of the circle is...
A = π(26.705/π)²
A = π(26.705²/π²)
A = 26.705²/π
A = 227.0049315 in²