This module is from Fundamentals of Mathematics by Denny Burzynski and Wade Ellis, Jr. This module discusses how to add and subtract mixed numbers. By the end of the module students should be able to add and subtract mixed numbers.
Section overview
The Method of Converting to Improper Fractions
To add or subtract mixed numbers, convert each mixed number to an improper fraction, then add or subtract the resulting improper fractions.
Sample set a
Find the following sums and differences.
. Convert each mixed number to an improper fraction.
A man pours
gallons of paint from a bucket into a tray. After he finishes pouring, there are
gallons of paint left in his bucket. How much paint did the man pour into the tray?
A particular diet program claims that
pounds can be lost the first month,
pounds can be lost the second month, and
pounds can be lost the third month. How many pounds does this diet program claim a person can lose over a 3-month period?
If the diet program described in the problem above makes the additional claim that from the fourth month on, a person will lose
pounds a month, how much will a person who begins the program weighing
pounds weight after 8 months?
Step 1: Find the mean. To find the mean, add up all the scores, then divide them by the number of scores. ...
Step 2: Find each score's deviation from the mean. ...
Step 3: Square each deviation from the mean. ...
Step 4: Find the sum of squares. ...
Step 5: Divide the sum of squares by n – 1 or N.
The sample of 16 students is taken. The average age in the sample was 22 years with astandard deviation of 6 years. Construct a 95% confidence interval for the age of the population.
Bhartdarshan' is an internet-based travel agency wherein customer can see videos of the cities they plant to visit. The number of hits daily is a normally distributed random variable with a mean of 10,000 and a standard deviation of 2,400
a. what is the probability of getting more than 12,000 hits?
b. what is the probability of getting fewer than 9,000 hits?
Bhartdarshan'is an internet-based travel agency wherein customer can see videos of the cities they plan to visit. The number of hits daily is a normally distributed random variable with a mean of 10,000 and a standard deviation of 2,400.
a. What is the probability of getting more than 12,000 hits