Answer:
Seth has 21 nickels
Step-by-step explanation:
Let n represent the number of nickels. Since Seth has 8 more nickels than dimes, then (n-8) is the number dimes.
Nickel is worth 5 cents and dime is worth 10 cents. Thus, n nickels are worth 5n cents and (n-8) dimes are worth 10(n-8) cents. The total value of Seth's coins is $2.35 that is 235 cents, then

Solve this equation:

diameter of human hair is around 0.0025cm
in scientific notation it is: 2.5x10^-3
15/1 multiply by 4 to get the same denominator =
45/4 45 divided by 3 = 15 3/4 cups are needed which equals 45/4 cups of milk
27 because you have to divide 54 pencils by two people
Answer:
geometric (so it's a 1:3 ratio I believe)
Step-by-step explanation:
you're multiplying by 3 each time