Erence Example 11
A circle has a radius of 7.5 cm. A sector
with an angle of 240° is cut out from the
circle.
a) Find the length of the arc of the sector.
b) If the sector is folded to form a cone,
find, correct to one decimal place:
i) the radius of the cone.
ii) the height of the cone.
iii) the volume of the cone.
iv) the curved surface area of the cone.
[Take a = 3.142]​

Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)