Questions in mathematics

Questions in mathematics

📝 Answered - There are 50 questions to answer in a trivia contest. Each player starts with 100 points. A player earns 10 points for each correct answer but loses 4 points for each incorrect answer. Each player must answer all 50 questions. What is the fewest number of questions a contestant must answer correctly to get a score over 350?

📝 Answered - Verify the identity sec(beta) - 1 / cos(beta) = sec(beta)

📝 Answered - Solve the equation: \[ 3(4d + 1) - 9d = 6 - 2d \]

📝 Answered - You work at a clothing store, and your boss wants you to find out which type of shirt had the highest percentage of sales. You found that 13 out of 20 tank tops were sold, and 15 out of 25 T-shirts were sold. Which percent represents the type of shirt with the greater percentage sold? A. 15% B. 13% C. 60% D. 65%

📝 Answered - How can you solve this problem? 37 + y = 87

📝 Answered - Jamaal buys his clothes at Super Discounts. On Saturday, he bought shoes regularly priced at $40 for 25% off and a jacket regularly priced at $100 for 30% off. Including a 6% sales tax, what total amount will Jamaal pay?

📝 Answered - A light plane flew from its home base to an airport 255 miles away. With a headwind, the trip took 1.7 hours. The return trip with a tailwind took 1.5 hours. Find the average airspeed of the plane and the average wind speed.

📝 Answered - What times what equals 16?

📝 Answered - Do you know 3 prime numbers that sum up to 32?

📝 Answered - Here's a story problem: Rita wants to estimate the number of beans in a large jar. She takes out 100 beans and marks them. Then she returns them to the jar and mixes them with the unmarked beans. She then gathers some data by taking a sample of beans from the jar. Use her data to predict the number of beans in the jar.