It is lower then 20 so most likely C (15)
Answer:
Option A - 
Step-by-step explanation:
Given : Expression 
To find : Solve the expression ?
Solution :
Step 1 - Write the expression

Step 2 - Multiply the first two bracket in multiplication if base are same power get added and apply symbol rule of multiplication 

Step 3 - Again multiply the bracket,

Therefore, Option A is correct 
R(t) = integral of r'(t) = integral of ti + e^tj + te^tk = 1/2t^2i + e^tj + (te^t - e^t)k + c
r(0) = j - k + c = i + j + k
c = i + 2k
Therefore, r(t) = (1/2t^2 + 1)i + e^tj + (te^t - e^t + 2)k
Answer:
8x^6
Step-by-step explanation:
Answer:the answer is 28 the second one.
Step-by-step explanation: