Answer: radius = 6.18 (I don't know what solutions you have, but the actual answer for the radius is about 6.18 cm so which ever is closest.)
Step-by-step explanation:
the area of a circle is \pi r^{2}
*rewrite your equation solving for radius
r=\sqrt{A/\pi } =\sqrt{120/\pi } = 6.18
Answer:
the answer for x<5
Step-by-step explanation:
Step 1: Simplify both sides of the inequality.
−4<−4x+16
Step 2: Flip the equation.
−4x+16>−4
Step 3: Subtract 16 from both sides.
−4x+16−16>−4−16
−4x>−20
Step 4: Divide both sides by -4.
−4x
−4
>
−20
−4
x<5
Answer:
218 cm²
Step-by-step explanation:
= high × wide
= 9 × 2
= 18
= 6 × (5+3)
= 6 × 8
= 48
= 8 × (11+5+3)
= 8 × 19
= 152
area throughout
= 152 + 48 + 18
= 218 cm²
Answer:
area = 2236 in²
Step-by-step explanation:
area of a triangle = 1/2 b h
b = 86
h = 52
plug in values
area = 1/2 * 86 * 52
area = 2236 in²
Hi,
1) ax²+2bx+c=0 have real roots then (2b)²-4ac>=0 ==> 4b²>=4ac ==> b²>=ac
2) bx²-2√(ac)x+b=0 have real roots then
(-2√(ac))²-4b²>=0==> 4ac>=4b²==> ac>=b²
So b²>=ac>=b²==> b²=ac
