Answer:
The scouts hiked up the mountain in 1 mile.
Step-by-step explanation:
X - (-2) = 21 <== ur equation
x + 2 = 21
x = 21 - 2
x = 19
You have to do speed over time to find out the distance the tourist will have to cover. (Speed multiplied by time= distance)
Answer:
66,666666666666666666666666666666666667% :))
Step-by-step explanation:
total number of students in 1 class: 12 + 6 = 18 students
percentage of student wearing glasses are:

Done :))