1) sally and maria hypothesized that earthworms lived only in dark, damp places. they measured a one-meter square in a shady spot near a stream. they dug through the soil and collected earthworms. they collected 43 worms. what should the girls do to reach a valid conclusion for their hypothesis? a) repeat the experiment in another shady spot. b) nothing. they carried out a valid experiment. c) repeat the their steps in different locations, including sunny, dry, and wet. d) repeat the dig on a larger area near the stream.

Need an artist designed a badge for a school club. figure abcd on the coordinate grid below shows the shape of the badge: the badge is enlarged and plotted on the coordinate grid as figure jklm with point j located at (2, -2) and point m is located at (5, 4). which of these could be the coordinates for point l? a. (2, 4) b. (8, 4) c. (5, 1) d. (5, 7)

Need 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.

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).