Me
hank the hiker would like to go on a hike. he only has four hours available today for the hike. the expression
1/2d + 1/2e
is used as a general guide to determine how much time, in hours, a hiker should allow for hiking a trail with a distance of d miles and an elevation gain of e thousand feet. the trail hank would like to hike is 6 miles long and has an elevation gain of 3000 ft. will hank be able to complete this hike in the block of time he has available today?

No.

Step-by-step explanation:

Amount of time that Hank has today for hike = 4 hours

Lengtht of hike trail = 6 miles

Elevation gain of trail = 3000 feet

The expression Hanks use as a general guide is:

Here,

d is the distance in miles, so for given case d = 6

e is the elevation gain in thousands, so for given case e = 3

Using these values, the approximate time Hank would need for the hike comes out to be:

Thus, Hank would need 4.5 hours to complete the hike. Since, he has only 4 hours available today he wont be able to complete the hike.

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -