The wheel on ed's chair has a radius of 30 cm. if he travels 540π cm, the wheel will rotate times.
a) 6
b) 9
c) 12
d) 18

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

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample

What are the intercepts of x^2+y-9=0