PLEASE ANSWER WILL GIVE BRAINLIEST. Given that cos(x)=9/√82 and tan(y)=1/2, and that angles x and y are both in Quadrant I, find the exact value of cos(x-y), in simplest radical form.

Ten times the square of a non-zero number is eqaul to ninety times the number

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.

The frequency table shows the results of a survey asking people how many hours they spend online per week. on a piece of paper, draw a histogram to represent the data. then determine which answer choice matches the histogram you drew. in order here is the.. hours online: 0-3, 4-7, 8-11, 12-15, and 16-19. frequency: 5, 8, 10, 8, 7 answer for the question is in the picture! : )