I think the answer is b because it make the most sense
Answer:
answer is g (x) = 2(3)-x I guess not really sure aguh work it again
I'm guessing 0 but its probably wrong but i do know for 2-5 its going to be negative number that should help u the negative is -3 again i think its 0! But how should i know im in 8th grade!
Answer:
Option B. ![212.1\ cm^{2}](https://tex.z-dn.net/?f=212.1%5C%20cm%5E%7B2%7D)
Step-by-step explanation:
step 1
Find the central angle of the shaded sector
Remember that the diameter divide the circle into two equal parts ( 180 degrees each part)
so
Let
x -----> the measure of the central angle of the shaded sector
∠x+72°=180°
∠x=180°-72°=108°
step 2
Find the area of the circle
The area of the circle is
![A=\pi r^{2}](https://tex.z-dn.net/?f=A%3D%5Cpi%20r%5E%7B2%7D)
we have
![r=15\ cm](https://tex.z-dn.net/?f=r%3D15%5C%20cm)
assume
![\pi=3.1416](https://tex.z-dn.net/?f=%5Cpi%3D3.1416)
substitute
![A=(3.1416)(15)^{2}](https://tex.z-dn.net/?f=A%3D%283.1416%29%2815%29%5E%7B2%7D)
![A=706.86\ cm^{2}](https://tex.z-dn.net/?f=A%3D706.86%5C%20cm%5E%7B2%7D)
step 3
Find the area of the shaded sector
Remember that the area of the complete circle subtends a central angle of 360 degrees
so
by proportion find the area of a sector by a central angle of 108 degrees
![\frac{706.86}{360}=\frac{x}{108}\\ \\x=706.86*108/360\\ \\x=212.1\ cm^{2}](https://tex.z-dn.net/?f=%5Cfrac%7B706.86%7D%7B360%7D%3D%5Cfrac%7Bx%7D%7B108%7D%5C%5C%20%5C%5Cx%3D706.86%2A108%2F360%5C%5C%20%5C%5Cx%3D212.1%5C%20cm%5E%7B2%7D)
Answer:
x-7>0
Straight answer: x-7
Step-by-step explanation:
Assuming that the timber is X cm long and 7cm was cut off, there remaining amount is x - 7cm. In order for 7cm to be cut off, the timber must have been > 7cm long => x > 7 => x - 7 > 0