Xd multiply and simplify: 2a(5a2 + 3a – 17) a. 7a2 + 5a – 15 b. 7a3 + 5a2 – 15a c. 10a3 + 6a2 – 34a d. 10a2 + 6a – 34

Which of these triangle pairs can be mapped to each other using two reflections?

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%