Mathematics, 11.10.2019 18:30 miner12924owhu4d
Which shows the correct substitution of the values a, b, and c from the equation –2 = –x + x2 – 4 into the quadratic formula? quadratic formula: x = startfraction negative b plus or minus startroot b squared minus 4 a c endroot over 2 a endfraction x = startfraction negative (negative 1) plus or minus startroot (negative 1) squared minus 4 (1)(negative 4) endroot over 2(1) endfraction x = startfraction negative 1 plus or minus startroot 1 squared minus 4 (negative 1)(negative 4) endroot over 2(negative 1) endfraction x = startfraction negative (negative 1) plus or minus startroot (negative 1) squared minus 4 (1)(negative 4) endroot over 2(1) endfraction x = startfraction negative (negative 1) plus or minus startroot (negative 1) squared minus 4 (1)(negative 2) endroot over 2(1) endfraction
Answers: 1
Mathematics, 21.06.2019 17:20, kolbehoneyman
Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers. a) one of the 400 passengers is selected uniformly at random. let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem
Answers: 3
Mathematics, 21.06.2019 20:40, afletcher2000
If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32
Answers: 1
Mathematics, 21.06.2019 20:40, mimithurmond03
In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.
Answers: 3
Which shows the correct substitution of the values a, b, and c from the equation –2 = –x + x2 – 4 in...
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