Why do we multiply by a power of 10 when writing a repeating decimal as a rational number

What happens to the value of f (x) = log4x as x approaches 0 from the right?

The circumference of a circle with a radius of 2 meters is approximate by the perimeter of an inscribed polygon with 10 sides. Which expression gives the described approximation of the circumference?

A jar only has quarters and dimes in it. The ratio of quarters to dimes in a jar is 5 to 3. There are 120 coins in the jar. How many quarters are in the jar?

The difference between 300,000 and 72,374 is

Triangle ABC rotates the origin which rule describes the rotation

A rectangle is twice as long as it is wide. it's area is 72 square units. Find the length of each side

Andrea built a circular barbecue pit with a circumference of 9 feet. She wants a rod to go across the pit to use for a rotisserie. The rod must go from one edge of the pit to the other, passing through its center.

How to find which cereal has the higher ratio of protein

Great a word problem for x+2=3x-8

21 is what percent less than 35?