When swimming claire averages 17 1/2 laps per hour if she swims 11/20 hours how many laps does she swim

Which of the following is correct interpretation of the expression -4+13

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle