An aircraft takes off at sea level and ascends to 1000 feet. it then descends 250 feet. find the elevation of the aircraft.

On new year's day, the average temperature of a city is 5.7 degrees celsius. but for new year's day 2012, the temperature was 9.8 degrees below the average. i) if a represents the average temperature on new year's day and 7 represents the temperature on new year's day 2012, what formula accurately relates the two values together? ii) what was the temperature on new year's day 2012? dt a 0.8 ii) - 4 1 degrees celsius da-t-98 ii) 59 degrees celsius 1) 7 = -9,8 11) 59 degrees celsius ii) l degrees celsius

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c