This expression can be written as 4(x+3) because you have to multiply the sum of x and 3 by 4.
Hope this helps
3 (-5) - 3 (1)
-15 - 3
-18
-18 is the answer
My answer is 1/6. Here's How I worked it out:
11/21 / 22/7 is the same as or = to 11/21 * 7/22 which = 77/462 and then divide both the numerator and denominator by 77 and you get 1/6. (In other words simplify 77/462). Hope this helped :)
From the question we are told that:
Total Sample size n=500
Dan's mean \=x_D= 3hr
Bret's mean \=x_D= 4hr
Generally, the Total hours spent doing leisure and sports activities is mathematically given by
For Sample A
For Sample B
Therefore
Average Time spent doing leisure and sports activities by an American Adult
For Sample A
For Sample B
Therefore
Dan is Correct because 3.08 or 3.09 is approximately equal to 3