Từ một nhóm kĩ sư 10 người gồm 6 kĩ sư hóa và 4 kĩ sư điện chọn ngẫu nhiên 4 kĩ sư tính xác xuất để trong 4 người được chọn có 2 kĩ sư điện

It costs 4.25 for 1 pound of roast beef. how much will it cost to purchase 2.5 pounds of roast beef? round to nearest cent

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.

If the tip varies directly with the number of guest which equation represents between the tip,t, and the number of guest,g?