Which expression represents the number of hours in w weeks and d days? A. 7W + 12d
B. 84W + 24d
C. 168W + 24d
D. 168W + 60d

Work Shown:

w = number of weeks

d = number of days

1 day = 24 hours

1 week = 7 days

1 week = 7*24 hours = 168 hours

If 1 week is 168 hours, then w of them leads to 168w hours. The w is simply a placeholder for a number. For example, if 2 weeks go by, then w = 2 and 168*w = 168*2 = 336 hours have elapsed.

Then we add on 24d to represent the number of hours after d days have passed by. The variable d is the number of days. Like w, the variable d is also a placeholder.

We add up 168w and 24d getting 168w+24d. We don't have any like terms to combine, so we leave this as is.

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

54.864 meters

step-by-step explanation: