For the commodity market C = aY + b and I = cr + d For the money market MS = MS* and MD = k1Y +k2r +k3 If both markets are in equilibrium, find the matrix A such that Ax = b where x = [r/Y] and b = [MS* - k3/ b+d]

In a certain pentagon, the interior angles are a,b,c,d,e where a,b,c,d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

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?

Acircle has a circumference of 28.36 units what is the diameter of the circle