Mathematics, 03.08.2019 20:00 kids2006
Solve the following system of equations by linear combination: 2d + e = 8 d - e = 4 a. the solution is (5, -2) b. there is no solution c. there are an infinite number of solutions d. the solution is (4, 0)
Answers: 1
Mathematics, 21.06.2019 12:30
And employee salary increased by $4500 which represents a 15% raise what is the rate of the increase
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If there is no real number solution to the quadratic equation x^2+2x+c=0 what is a possible value of c? 1 -2 0 3
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Mathematics, 21.06.2019 18:00
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?
Answers: 3
Mathematics, 21.06.2019 19:50
Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .
Answers: 3
Solve the following system of equations by linear combination: 2d + e = 8 d - e = 4 a. the solutio...
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