Achild lies on the ground and looks up at the top of a 9-ft tree nearby. the child is 13 ft away from the tree. what is the angle of elevation from the child to the top of the tree? round to the nearest whole degree. a) 35° b) 46° c) 44° d) 55°

Pls! does anybody know a shortcut for answering these types of questions in the future?

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

The fraction of defective integrated circuits produced in a photolithography process is being studied. a random sample of 300 circuits is tested, revealing 17 defectives. (a) calculate a 95% two-sided confidence interval on the fraction of defective circuits produced by this particular tool. round the answers to 4 decimal places. less-than-or-equal-to p less-than-or-equal-to (b) calculate a 95% upper confidence bound on the fraction of defective circuits. round the answer to 4 decimal places. p less-than-or-equal-to