If there are two coins in a box, one fair coin that has heads and tails and one trick coin with heads on both sides, what is the probability you will get the trick coin?

8x^3-22x^2-4 divided by 4x-3

There is a bag with only red marbles and blue marbles. The probability of randomly choosing a red marble is 5 12 . There are 72 marbles in total in the bag and each is equally likely to be chosen. Work out how many red marbles there must be.

in 2016 there were about 46,500 cinema screens in a counrty. if about 29.1% of the screens in the country were digital 3-D screens, find the approximate number of digital 3-D screens

A single person pays $3,100 in income taxes on a gross income of $38,000. How much would a single person be expected to pay if his gross income is $44,000? (Assume both incomes are in the same tax bracket.)

Tell whether the angle on the circle is 1/4,1/2,3/4 or i full turn clockwise ir counterclockwise

For a standard normal distribution, which of the following expressions must always be equal to 1? A) P (z≤-a) - P (-a≤z≤a) + P (z≥a) B) P (z≤-a) - P (-a≤z≤a) + P (z≥a) C) P (z≤-a) + P (-a≤z≤a) - P (z≥a) D) P (z≤-a) + P (-a≤z≤a) + P (Z≥a)

60/5 (7-5) = 2 I got 24, but some other people got 6. 60/5 (7-5) - P 60/5 (2) - M/D (left to right) 12 (2) - M/D (left to right) =24

If two circles have the same circumference what do you know about their area

4x - 2y = 0 x + y = 6

Biologists have discovered that the shoulder height h (in centimeters) of a male Asian elephant can be modeled by h = 62.5 3 t + 75.8, where t is the age (in years) of the elephant.