Hello!
Given that the area of a circle is found by using the formula: A = πr². Also, the circumference of a circle is: C = 2πr.
In order to find the circumference, we need to find the radius first. We can substitute the area into the area formula and solve for r.
25π = πr² (divide both sides by π)
25 = r² (take the square root of both sides)
r = 5
The radius of this circle is 5 units. With the radius, we can find the circumference.
C = 2π(5)
C = 10π, which is equal to about 31.4 units.
Therefore, the circumference of the circle is 10π units.
We are going to calculate D=b²-4ac , if it less than 0 , the equation will not have real solutions
1. D=4²+4*2*12 positive 2 real solutions
2. 2x²-x-12=0
D=1²+4*1*12 positive 2 real solutions
3. 2x²+4x+12=0
D=16-4*2*12=16-96=-80 no real solutions , correct answer C
4. D=16-4*2*0=16 two real solutions
Answer:
y=3x+3
Step-by-step explanation:
9=3(2)+c
9=6+c
c=3
You would start by subtracting 5-7=2 which would make the equation
3x=x-2 then subtract x from both sides to get 2x=-2 then you would divide both sides by -2 so x=1
Mario Cart
What about you?