Sam wrote the number 1-100 and placed them in a bag. if he selects a number without looking what is the probability that the number contains a 7 in it?

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

How far could you drive on 50 gallons of gas

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?