A rectangular book measures 4 x 7. What is the length of its diagonal?
a 6.2
b 8.1
C 5.7
d 4.8

All per-unit concepts rely on ratios,meaning,to provide a type of measurement

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?