Wangari plants 12 trees every 3 hours. write an equation that relates the number of trees wangari plants (p) and the time she spends planting them (h) in hours.

Step-by-step explanation:

The equation of direct variation is given by:

where,  x= independent variable

y= dependent variable

k is the constant of proportionality.

Let the number of trees Wangari plants is denoted by p and the time she spends planting them is denoted by h ( inhours).

here , independent variable = h

dependent variable = p

Since time ∝ Number of plants planted.

So by using direct variation equation , we get

  (1)

According to the given statement : Wangari plants 12 trees every 3 hours.

So we have

Put value of k in (1) , we get

Hence, the required equation that relates the number of trees Wangari plants (p) and the time she spends planting them (h) in hours:

answer: 180

step-by-step explanation:

12-2=10

20-2=18

18x10=180

a² + b²= c²

24² + 7² = c²

c= 25