Assume X and Y are random variables with both have mean 3 and variance 2. Calculate E left square bracket X squared plus 4 Y minus 5 right square bracket. (Hint: Think how to calculateE left square bracket X squared right square bracket given the mean and the variance).

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?

Jamie went to home depot. she bought 25 bags of soil that cost $9 per bag. she bought 15 pots at $8 each, and she bought 23 bags of pebbles at $15 each. she used a coupon that gave her $5 off for every 100 dollars she spent. how much did jame pay at the end?

Are the corresponding angles congruent? explain why or why not.