Express 1.21212121 ... as a fraction

A museum worker randomly displays 5 historical writings in a row. What is the probability that the worker lines them up from the oldest to the most recent from left to right?

Simplify these expressions. a. 2r + 3 + 4r b. 8 + 3d + d c. mn + (-3mn) + 6 d. 10s + (-10) + (-4s)

Find the vertex of y=-x^2+6x-12

Given a mortgage of 48,000 for 15 years with a rate if 11%, what are the total finance charges

The perimeter of a rectangle is 20 m and it's area is 24 sq. m. Find its dimensions A 4m and 8m B 4m and 6m C 6m and 8m D 12m and 8m

A carpenter is putting a skylight in a roof. If the roof measures 10x + 9 by 7x + 7 and the skylight measures x + 5 by 3x + 3, what is the area of the remaining roof after the skylight is built?

What does principle amount mean

If z varies directly as x and z=30 when x=8 find z when x=4

Which measurement statement is correct? A. There are 2 cups in a pint B. There are pints in a cup C. There are 4 quarts in a pint D. There are 4 pints in quart

What is the surface are of a storage b