Prove why 0.87 recurring is equal to the fraction 87/99

(Ps both the 8 and the 7 are recurring)

The number 78 is decreased to 72. What is the percentage by which the number was decreased, to the nearest tenth of a percent?

Each course at Mt. Regis College is worth either 3 or 4 credits. The members of the men's swim team are taking a total of 48 courses that are worth a total of 155 credits. How many 3-credit courses and how many 4-credit courses are being taken

How do you write standard number 0.00073 in scientific notation?

What symbols can make 8 2 6 3 equal to 14

How do you find the percentage of a fraction?

What shape has 3 straight sides other than a triangle?

What is the relationship between the value of a dollar and the value of a dime

The Cool Company determines that the supply function for its basic air conditioning unit is S (p) = 40 + 0.008p^3 and that its demand function is D (p) = 200 - 0.16p^2, where p is the price. Determine the price for which the supply equals the demand.

Seven three squared plus ten

Which exponential equation is equivalent to the logarithmic equation below? c = ln 2