The perimeter of a regular hexagon is 78 cm .What will be the length of each side?

Sally deposited money into a savings account paying 4% simple interest per year. the first year, she earned $75 in interest. how much interest will she earn during the following year?

Hundred and tens tables to make 430 in five different ways

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!