Giả sử rằng tại một thành phố nào đó chỉ có 3 nhà cung cấp mạng Internet chiếm thị phần lần lượt là 30%,50%,20%. Tỉ lệ khách hàng phản hồi tốt về dịch vụ của 3 nhà cung cấp lần lượt là 90%,95%,85%. Hãy tính tỉ lệ phản hồi tốt về dịch vụ internet trên toàn thành phố.

What number should be added to both sides of the equation to complete this square? x^2-10x=7

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 florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?