∠A and ∠B are adjacent. The sum of their measures is 92∘. ∠A measures (2x+5)∘. ∠B is three times the size of ∠A. Write an equation to determine the value of x. Then solve your equation and find the measures of both angles.

Enter the correct answers in the box.

equation:

solution: x=

m∠A=
∘
m∠B=
∘

Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.