When it comes to finding the percent of something, you simply divide the percent by 100 and multiply that number by the given amount, like so:
105*.17=17.85
$17.85
<span>The plumber's hourly rate is $43. To come to this answer, I first subtracted the $45 fee from 303. That answer was 258, which I divided by 6, because that was the number of hours the plumber worked. That answer was 43, so his hourly rate is $43.</span>
There are many dentists in the world and it wold be hard to count the amount of dentists that use the toothpaste. Also, there are many brands of toothpaste and it would would be doubtful that “80%” of dentists would use the same one.
Answer:
X=1
Step-by-step explanation:
Solve this like any other two step equation.
But first plug in y value.
3x + 2 = 5
Subtract 2 from each side
3x = 3
Now divide each side by 3
X=1
Hope this helps plz mark brainliest!
Answer:
Sample size of 586 or higher.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
The margin of error is:
95% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
What sample size could be 95% confident that the estimated (sample) proportion is within 4 percentage points of the true population proportion?
Sample size of at least n when 
42.1% of women-owned businesses provided retirement plans contributions, which means that 
. So
We need a sample size of 586 or higher.
