The scale of a map is 4 cm: 15 km. if the distance on the map between two cities is 7 cm, what is the actual distance?

26.25 km

Step-by-step explanation:

Step up a portion.  Here, 4 cm is to 7 cm as 15km is to x km

4/7 = 15/x

Now solve for x by cross multiplying

4x = 105

  x = 105/4    (divide by 4 on both sides)

  x = 26.25 km    (simplify)

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.