25 points for this question.
a tourist first walked 17 km with a speed of v km/h. then he hiked 12 km uphill with the speed that was 2 km/hour less than his original speed. the whole trip took him t hours.

how much time did the tourist spend on this trip if his original speed was 5 km/h?

7 hours 24 minutes

Step-by-step explanation:

17 and 5 go into each other 3 2/5 times

12 and 3 go into each other 4 times

Add 3 2/5 and 4 to get 7 2/5

That is equal to 7 hours and 24 minutes

The tourist spend 31 km/h on his trip.

Step-by-step explanation:

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!