Answer: 0.76
Step-by-step explanation:
We know that the sample proportion is the best estimate of the population proportion. (1)
Given : Gallup reported that of the 1,005 people surveyed, 76% of U.S. workers believe that they will continue working past retirement age.
Let p be the population proportion.
We have sample proportion: 
Therefore, the estimated proportion of U.S. workers believe that they will continue working past retirement age from the sample = 
1/2n + 15 = 9 <== ur equation
1/2n = 9 - 15
1/2n = - 6
n = -6 * 2
n = - 12 <== ur solution
Answer: 350km/h,349
Step-by-step explanation:Find the exact value using tringometric identities
You mean, what is this number?
we can rephrase it like this: the sum of a number x and 8 is 15
which is:
x+8=15
we subtract 8 from both sides and we get
x=7
so the answer is 7.