Use proportionalitie of sides so because this line with length 2x-8 is a midle segment line what mean that
2x-8 1
------- = --- => 2x -8 = 10 so 2x = 18 so x = 18/2 so x = 9
20 2
and so choice C. is right sure
Answer with Step-by-step explanation:
V=kr²h
Where r is the radius and h is the height of the cylinder
Cylinder A has a volume of 251.2 cubic inches and has a radius of 4 inches and a height of 5 inches.
⇒ 251.2=k×4²×5
⇒ 251.2=80k
⇒k=251.2/80
⇒ k=3.14
We have to find volume of cylinder B, which has a radius of 3 inches and a height of 9 inches
r=3 inches
h=9 inches
V=3.14×3²×9
=254.34 cubic inches
Hence, Volume of cylinder B is:
254.34 cubic inches
Answer: B. neither perpendicular nor parallel
Step-by-step explanation: If the lines were perpendicular, the coefficients would be swapped and one negated. (You would have 8x -y = c, or 9x +2y = c in the system.)
If the lines were parallel, the coefficients in the two equations would only differ by a common factor. (Both equations would reduce to 2x -9y = c, or x +8y = c.)
The lines are not the same line (coefficients are different).
So, the only reasonable description is ...
neither perpendicular nor parallel
Answer:
x≤−8
Step-by-step explanation:
2x+3≤x−5
Subtract x from each side
2x-x+3≤x-x−5
x+3≤−5
Subtract 3 from each side
x+3-3≤−5-3
x≤−8
Answer:
inverse operation
Step-by-step explanation: