Step-by-step explanation:
is a root of the quadratic
This quadratic isn't factorable so use the quadratic formula
The plus and minus sign after b means we going to have two roots.
The roots are
and
We subsitue those values for Beta.
27a.
27b.
25
Answer:
a .8
b .03
c .125
d 125.0
Step-by-step explanation:
Area = the top semicircle + the rectangle AEBD
= 1/2 pi*6^2 + 6*12 = 128.55 cm^2 to nearest 100th
Perimeter = 6pi + 12 + 2 pi * 3 = 49.70 cm
Answer:
D
Step-by-step explanation:
Answer:
Area = 64π
Area \: = \pi {r}^{2}Area=πr
2
64 \: \pi \: = \pi {r}^{2}64π=πr
2
{r}^{2} = \dfrac{64\pi}{\pi}r
2
=
π
64π
{r}^{2} = 64r
2
=64
r \: = \: \sqrt{64} = 8r=
64
=8
Radius = 8 units
Finding the Diameter -
Diameter = Radius x 2 = 8 x 2 = 16 .
\bold{Diameter \: is \: 16 \: units}Diameteris16units
