Let the number be x
The sum of 2 equal numbers is simply x+x or 2x.
The direct variation between x and y may be written as,
y = kx
where k is the constant of variation. From the first set of values of the variables,
12 = k(8)
the value of k is 1.5. Substituting the next set to the same equation,
y = 1.5(14)
The value of y is 21.
Answer:
=k= -2.2/6.7
= k=(.328)
Step-by-step explanation:
2.2=k+6.7/-1
=2.2×-1=6.7+k
=k= -2.2/6.7
= k=(.328)
Hey mate hope it's help you.....
Anita can clean 1/8 portion of the pool in 1 hour
Chao can clean 1/6 portion of the pool in 1 hour
Both of them working together can clean 1/8 + 1/6 = 7/24 portion of the pool in 1 hour
Therefore, it will take both of the working together 1/(7/24) = 24/7 or 3 3/7 hours to clean a typical pool.