Questions in mathematics

Questions in mathematics

[Free] Billy likes to go cycling. His bike has wheels with a diameter of 80 cm. He invented a counter for his bike, which counts how many revolutions the wheel does. One day, the counter shows 170 revolutions. How far has Billy cycled to the nearest meter?

[Free] Crickets chirp more frequently as temperature increases. You can estimate the Fahrenheit temperature by counting the number of times a particular type of cricket chirps in 15 seconds and adding 39. a. What is the temperature if a cricket chirps two times each second?

[Free] Factorize \( n^2 - 7n + 12 \). Explain your answer.

[Free] Your family loves turkey. Uncle Bill ate \(\frac{1}{4}\). Cousin Chris ate 15%. Cousin Timmy ate 0.3. Cousin Dave ate 12%. Who ate the most turkey? Write the amount each person ate as a fraction, decimal, or percent.

[Free] A red candle is \(11 \frac{2}{5}\) inches tall. The label claims that the candle will melt \(1 \frac{1}{8}\) inches every hour it burns. If the label is correct, for how many hours will the candle burn?

[Free] If \( P(-2, 1) \) is rotated 90°, its image is:

[Free] Evaluate [tex] \int \limits^5_2 { x^{2} + 3x } \, dx [/tex].

[Free] A rectangular athletic field is twice as long as it is wide. If the perimeter of the athletic field is 240 yards, what are its dimensions?

[Free] The United States consumes 2.6 billion cases of bottled water per year. Assume that each case holds 24 half-liter bottles. Each case is 10.2 inches tall, 15.1 inches long, and 8.3 inches wide. 1. If all of these cases were lined up end-to-end at the equator, how many times would they go around the Earth? - Note: The circumference of the Earth's equator is 24,901 miles. 1 mile = 5280 feet. 2. What would be the perimeter and area of the base of all of these cases together? 3. What would be the total volume of all these cases?

[Free] what is the mistake in this problem?