A veterinarian is studying three different medications that could be used in the prevention of heartworm in young puppies. She has acquired for study four different litters of cocker spaniels, and three puppies were randomly selected from each litter. The three selected puppies from a litter were then randomly assigned to one of the three treatments. The data below represents the number of months after a single treatment before the initial onset of heartworm in the puppies. Is there sufficient evidence that the mean time to onset of heartworm differs among the three different medications

Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.

Find the average speed of a rabbit that runs a distance of 22 m in a time of 1.8 s .

If the value of cos330°is√3/2 then find cos 165°.