Questions in mathematics

Questions in mathematics

[Done] The temperature dropped by -2.5 Celsius degrees for 5 consecutive days. What was the total decrease in temperature over the 5-day period, expressed as a signed number?

[Done] A merchant buys an old carpet for $25.00. He spends $15.00 to have it restored to good condition and then sells the rug for $50.00. What is the percent profit on his total investment?

[Done] As a bowling instructor, you figure your students' averages during tournaments. In 5 games, one bowler had the following scores: 143, 156, 172, 133, and 167. What was that bowler's average?

[Done] How do I derive \( x^{-4} \) using the limit definition \(\frac{f(x+h) - f(x)}{h}\)?

[Done] What is 0.8% written as a decimal?

[Done] What is \(\frac{1}{9}\) of 60 equal to?

[Done] True or false: A trapezoid is a polygon, so all polygons are trapezoids. Explain.

[Done] What is 574 in expanded form?

[Done] A car salesperson earns 1.5% commission on every car sold. The salesperson sells a car for $22,500. What is the commission?

[Done] Randal answers 96 out of 120 questions correctly on a science exam. What percent of the questions did Randal answer correctly?