Answer:
Option C - (-28p⁵-21p⁴+7p³)
Step-by-step explanation:
=> -7p³×4p²= -28p⁵---- 1
=> -7p³×3p= -21p⁴------ 2
=> -7p× (-1)= 7p³---- 3p
Add 1+2+3
=> (-28p⁵-21p⁴+7p³)
Hope this helps you.
Answer:
-20i² + 10i
Step-by-step explanation:
- 2i (-5 + 10i)
distribute
- 2i (-5) + - 2i (10i)
10i - 20i²
- 20i² + 10i
Answer:
r = -1 or r = 5/3
Step-by-step explanation:
(2k - 1)/(k + 1) = (3k + 1)/(2k - 1)
(2k - 1)^2 = (k + 1)(3k + 1)
4k^2 - 4k + 1 = 3k^2 + 4k + 1
k^2 - 8k = 0
k(k - 8) = 0
k = 0 or k = 8
For k = 0,
(2k - 1)/(k + 1) = -1/1 = 1
For k = 8,
(2k - 1)/(k + 1) = 15/9 = 5/3
17 1/2 i hope this helps!
As the diameter is 18, a radius is half the diamater ergo the radius is 9.
Use the circumference formula:

So, adapted it would be:
2 * π * 9 which would be 56.7.
The circumference is 57m.
Hope this helps!