Leon evaluated the expression (–4a – 6) + a2 for a = 8. (-4(8) - 6) + 82 (-32-6) + 82 (-38) + 82 (-38) + 16 –19 + 16 –3 analyze leon's work. check all that apply. leon should have subtracted inside the parentheses before he multiplied. the expression inside the parentheses should be simplified to –26 instead of –38. leon multiplied 8 by 2 when he should have raised 8 to a power of 2. the multiplication of two negative values in step 4 should result in a positive value. the correct answer should be 35.

Now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

The area of a circle is equal to 1 dm². find the radius of the circle.

What is the radius of the cone in the diagram? round your answer to the nearest whole number