This four digit has 1 in the thousand place. The number in the hundreds place is 2 times greater than the number in the ones place. The number in the tens place is 2 more than the number in the thousands place. all digits are different and are less than 5. What is the number

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

In the rectangle below ac=30 units what is de

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?