Answer:
1 hour 56 minutes
Step-by-step explanation:
Given :
Time taken by Lucy = 3 hours 15 minutes = 3.25 hours
Time taken by brother = 4 hours 45 minutes = 4.75 hours
Rate = 1 / time taken
Lucy's rate = 1 / 3.25
Brother's rate = 1 / 4.75
Combined rate = Lucy's rate + brother's rate
Combined rate = 1/3.25 + 1/4.75
Combined rate = 0.5182186
Time taken if they work together = 1/ combined rate
= 1 / 0.5182186
= 1.9296 hours
= 1 hour (0.9296 * 60) minutes
= 1 hour 56 minutes (approximately)
Answer:
We conclude that option A is true as x = 1 is the root of the polynomial.
Step-by-step explanation:
Given the polynomial

Let us determine the root of the polynomial shown below.


switch sides

as

so the equation becomes

Using the zero factor principle

solving




and


The possible roots of the polynomial will be:

Therefore, from the mentioned options, we conclude that option A is true as x = 1 is the root of the polynomial.
Answer:
Step-by-step explanation:
first of all that looks like an incomplete question because it does not give a ending point nor does it give a time of destination so I can't give an answer with only part of the question