EL RESULTADO QUE SE OBTIENE AL SIMPLIFICAR LA SIGUIENTE EXPRESIÓN ALGEBRAICA CORRESPONDE A: – { x + [ – 4x – y + ( –2x + y ) ] – 5y } – ( 7x + 2y ) – { 2y – [ – ( –3y + 8x ) ] } – ( 5y – 2x )

(urgent ) use pi 3.14 to estimate the circumference of the circle to the nearest hundredth middle is 4in (urgent )

Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.

The angle of elevation from point a to the top of the cliff is 38 degrees. if point a is 80 feet from the base of the cliff , how high is the cliff ?