HELP MATH QUESTION 1. The sum of a number (a) and 13 is 14 minus the same number (a).

2. The product of a number (c) and 7 is 42 divided by the same number (c).

3. A number (f) less than 27 is 82 divided by that same number (f).

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?