Answer:
E
Step-by-step explanation:
using the rule of radicals
×
⇔
, hence
=
=
×
×
[
= i]
= 2i
→ E
Find r :
C=2πr
280=2(3.14)r
r=280/2(3.14)
r=44.6cm
find area :
A=πr²
A=3.14(44.6)²
A=6246 cm²
Answer : 4)6,246
Answer:
![\huge\boxed{\sf x\leq 2}](https://tex.z-dn.net/?f=%5Chuge%5Cboxed%7B%5Csf%20x%5Cleq%202%7D)
Step-by-step explanation:
<h3><u>Given inequality:</u></h3>
![56-10x\geq 20+8x\\\\Subtract \ 20 \ from \ both \ sides\\\\56-20-10x\geq 8x\\\\36-10x\geq 8x\\\\Add \ 10x \ to \ both \ sides\\\\36\geq 8x+10x\\\\36\geq 18x\\\\Divide \ 18 \ to \ both \ sides\\\\2 \geq x\\\\OR\\\\x\leq 2\\\\\rule[225]{225}{2}](https://tex.z-dn.net/?f=56-10x%5Cgeq%2020%2B8x%5C%5C%5C%5CSubtract%20%5C%2020%20%5C%20from%20%5C%20both%20%5C%20sides%5C%5C%5C%5C56-20-10x%5Cgeq%208x%5C%5C%5C%5C36-10x%5Cgeq%208x%5C%5C%5C%5CAdd%20%5C%2010x%20%5C%20to%20%5C%20both%20%5C%20sides%5C%5C%5C%5C36%5Cgeq%208x%2B10x%5C%5C%5C%5C36%5Cgeq%2018x%5C%5C%5C%5CDivide%20%5C%2018%20%5C%20to%20%5C%20%20both%20%5C%20sides%5C%5C%5C%5C2%20%5Cgeq%20x%5C%5C%5C%5COR%5C%5C%5C%5Cx%5Cleq%202%5C%5C%5C%5C%5Crule%5B225%5D%7B225%7D%7B2%7D)
Answer:
66
Step-by-step explanation:
12x-30=6x+18
12x-6x=18+30
6x=48
x=8
Plug back In:
12(8)-30
96-30
66