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Liza is driving to her sister's house 360 miles away. After 4 hours, Liza is 2/3 of the way there. How many more hours does Liza have to drive?
<em><u>Answer:</u></em>
Liza need to drive 2 more hours to reach her sister house
<em><u>Solution:</u></em>
Given that Liza is driving to her sister's house 360 miles away
So total distance = 360 miles
After 4 hours, Liza is 2/3 of the way there.
So Liza has covered 240 miles in 4 hours
Let us find the speed
<em><u>The relation between distance and speed is given as:</u></em>
Thus speed = 60 miles per hour
Assuming speed is same throughout the journey, let us calculate the time taken to complete remaining distance
Remaining distance = 360 - 240 = 120 miles
Now distance = 120 miles and speed = 60 miles per hour
Thus Liza need to drive 2 more hours to reach her sister house
ANSWER
{},{1},{3},{5},{7},{1,3},{1,5},{1,7},{3,5},{3,7},{5,7},{1,3,5},{1,3,7},{3,5,7},{1,5,7},{1,3,5,7}
EXPLANATION
The given set is {1,3,5,7}.
This set has
subsets.
Where n=4 is the number of elements in the set.
Recall that the null set is a subset of every set and every set is a subset of itself.
The subsets are:
{}
{1},{3},{5},{7}
{1,3},{1,5},{1,7},{3,5},{3,7},{5,7}
{1,3,5},{1,3,7},{3,5,7},{1,5,7}
{1,3,5,7}