Solve for x. Question 9 options: A) 7 B) 5 C) 4 D) 6

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a

Which ratios are equivalent to 10: 16? check all that apply. 30 to 48 25: 35 8: 32 5 to 15