Use elimination 2x-y=4 7x+3y=27

A group of students was asked, "how many hours did you watch television last week?" here are their responses. 11, 6, 13, 18, 20, 14, 7 find the mean number of hours for these students. if necessary, round your answer to the nearest tenth

What is the probability that two given cards in a deck will be next to each other?

Which word completely describes the polygon whose vertices are the ordered pairs (2, 3), (9, 3), (9, - 2), and (2, - 2) ? A. none of these B. equiangular C. equilateral D. regular

6th Grade Math Lisa's family drove 830.76 miles to visit her grandparents. Lisa calculated that they used 30.1 gallons of gas. How many miles per gallon did the car average?

What is the solution of sqrt - 4x=100?

The total distance an object travels varies directly with the length of time it travels. If an object travels 24 meters in 9 seconds, how long will it take to travel 96 meters? A. 32 seconds B. 36 seconds C. 40 seconds D. 42 seconds

A polling organizations wants to sample the opinions of low-, medium-, and high-income people. Which sampling strategy is best suited for this purpose? A. convenience B. simple random C. stratified random D. systematic

If the area of the parallelogram is represented by 4x2 - 2x + 5 and the base is 2x - 6, which represents the height?

Singh works at a restaurant where he is paid by the hour plus time-and-a-half for his hours over 40. Last week he worked 3 hours overtime and his gross pay was $380.48. What is his hourly wage?

A researcher wishes to determine the average amount of money a student at UH spends on lunch. To accomplish this, he asks the first 100 students leaving the Student Center after 12:00 noon how much they had just spent on lunch.