Frank count by twos to 20. elsie count by one to 10. who will say more number? explain

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

98 point question what is the record for most points in one

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?