Susie has planned a trip to a city 60 miles away. she wishes to have an average speed of 60 miles/hour for the trip. due to a traffic jam, however, she only has an average speed of 30 miles/hour for the first 30 miles. how fast does she need to go for the remaining 30 miles so that her average speed is 60 miles/hour for the whole trip?

90 mi/h

Step-by-step explanation:

Given,

For first 30 miles, her speed is 30 miles per hour,

Let x be her speed in miles per hour for another 30 miles,

Since, here the distance are equal in each interval,

So, the average speed of the entire journey

According to the question,

Hence, she needs to go 90 miles per hour for remaining 30 miles.

b) 36

step-by-step explanation:

18 times 2 is 36

to find the total number of combinations, multiply the quantity of each item by each other:

2 pairs of shoes x 3 pairs of shorts = 6 different combinations.