We can use the formula y2-y1/x2-x1 to find slope given two points. Therefore, we have -1-8/-2-1, getting us -9/-3, or just 3. Hope this helps!
Answer:
C
Step-by-step explanation:
The volume (V) of a cone is calculated as
V = 
area of base × height
= × πr² × height
Here diameter = 22, thus r = 11 and h = 22
V = × π × 11² × 22
= × π × 121 × 22
= 
≈ 2787.64 → C
Its 6/7 (A) because the denominators are the same, so the denominator stays the same. But if it isnt I am sorry.
Change of base is
change base to 3
why would you want base 3? base 10 is on most calculators
anyway, the value would be 2.809555
Answer:
10 cm
Step-by-step explanation:
If we assume that DC is parallel to AB, then triangle DOC is similar to triangle AOB.
However, even with this assumption, there is not enough information in the diagram to solve for DO. We would also need to know the length of CO. Then we could write a proportion:
DO / (DO + 20) = CO / (CO + 24)
Edit: OD is 2 cm shorter than OC. If we call x the length of OD, then the length of OC is x+2.
Putting this into our proportion:
x / (x + 20) = (x + 2) / (x + 2 + 24)
x / (x + 20) = (x + 2) / (x + 26)
Cross multiply:
x (x + 26) = (x + 2) (x + 20)
Distribute:
x² + 26x = x² + 20x + 2x + 40
x² + 26x = x² + 22x + 40
4x = 40
x = 10
So the length of DO is 10 cm.
