Of the students in Marci's school, 5/9 have a pet. Of the students who have a pet, 12/25 have a dog. What fraction of the students in the school have a dog?

4 / 15

Step-by-step explanation:

Of all students ; 5/9 have a pets

Of the 5/9 who have a pet; 12 /25 have a dog

Fraction of the student in the school who have a dog;

12 /25 of fraction with pet

= 12 /25 of 5 /9

= 12 /25 * 5 / 9

= (12 * 5) / (25 * 9)

= 60 / 225

= 4 / 15

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13

square root

step-by-step explanation: