By what percent will a fraction decrease if its numerator is decreased by 50% and its denominator is decreased by 25%?

A regional forestry division wanted to estimate the number of deer in a particular national park. They caught and tagged 56 deer and released them back into the park. Later they selected a sample of 540 deer. Of the 540 deer, 30 were tagged.

Given that R=2x+9y Find x when y=3 and R=13.

Which substance has been changed most over time from its original plant material? A. peat B. anthracite coal C. bituminous coal D. lignite

What is the equivalent answer for 156:390

The 4 in 400,000 has a value of 400 yes or no

Two poles of lengths 10 ft and 15 ft are set up vertically with their bases on horizontal ground 12 ft apart. Find the distance between the tops of the poles.

Write the equation of the circle: center at (0,0), diameter 18

When I count as a principal of $1000 and earns 4% simple interest per year and other account as a principal $1000 and earns 4% interest compounded annually which account has the greater balance at the end of four years

A craft vendor must sell at least $300 worth of merchandise to make a profit. Scarves sell for $10 each and hats sell for $20 each. She expects to sell at least 20 items. The lines on the graph represent the situation in which she makes a profit.

Which properties justify the steps taken to solve the system? {3x-2y=10 4x-3y=14