Mariana paid $6 for 5 pound of apples. how much will she pay for 3 pounds of apples? let x be the amount she will pay for 3 lbs. a person is working at a constant rate. if he produces 15 details in 8 hours, how long does he need to work to produce 18 details? let t be the time he needs to produce 18 details. write an equation and find the answer!

I’m really confused and need to learn this

1. why is a frequency distribution useful? it allows researchers to see the "shape" of the data. it tells researchers how often the mean occurs in a set of data. it can visually identify the mean. it ignores outliers. 2. the is defined by its mean and standard deviation alone. normal distribution frequency distribution median distribution marginal distribution 3. approximately % of the data in a given sample falls within three standard deviations of the mean if it is normally distributed. 95 68 34 99 4. a data set is said to be if the mean of the data is greater than the median of the data. normally distributed frequency distributed right-skewed left-skewed

The lengths of the two sides of a right triangle are 5 inches and 8 inches what is the difference the possible lengths of the third side of the triangle