At evelyns pet shop the raio of cats to dogs is always 3 : 4 if the shop has 15 cats, how many dogs are there?

20 dogs; 3:4=15:x

15/3=5

4*5=20

Therefore, it is 20 dogs

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

it’s the first one your welcome