Help pleasee! | No links!! (20 points if answered) Which expression is not equal to 30?
A. (2 x 60 : 30) (24 + 2)
B. 2 + (30 – 8 = 4)
C. (120 = 20) x (2+3)
D. (9 x 10) = (4 + 1) + 12

(I obviously give brainliest!) ty!!

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

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is

Whuch statements about the diagram are true? select all that apply.