A sweater costs S$ before tax. If tax is $8.5%, then the cost after tax is what number times $S?

It is estimated that approximately 8.1% of Americans are afflicted with diabetes. Suppose that a certain diagnostic evaluation for diabetes correctly diagnoses 95% of all adults over 40 with diabetes as having the disease and incorrectly diagnoses 3.

The area of a 60º sector of a circle is 10π m2. Determine the radius of the circle. Write your answer in exact form.

Converting and rounding off dollars in cents. $4.5 $75.41 $45.89 $1.2 $5.65 $36.2 $25.00

Suppose you roll a single die. Find the probability of rolling an odd number.

Explain how do you know when to regroup in multiplication

81 to the power of 3/2

27 : 31 = 0.870967742 I need the answer simplified.

One half minus one eighth

The time, t, required to drive a fixed distance varies inversely as the speed, r. It takes 8 hr at a speed of 15 km/h to drive a fixed distance.

Solving systems by elimination (y=-x+1) (y=4x-14)