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One year has 4 quarters,so Mr. Cooper's yearly income of dividends is $0.35*280*4=$392

3 Answers · Science & Mathematics · 30/07/2008

SE = 120/sqrt(25) = 24

**z**= ± 50/24 = ± 2.08 to 2 dp P(-2.08 <**z**< 2.08) = 0.9624 [ D ] <------1 Answers · Science & Mathematics · 02/08/2012

P(X < 35,000.0) = P((x - 30,000) / 5,000.0) < (35,000.0 - 30,000) / 5,000.0) = P(

**Z**< 1.00) = 0.8413 P(X > 35,000.0) = 1 - 0.8413 = 0.15872 Answers · Science & Mathematics · 24/04/2007

OK .06x + .07y + .08z = 67,500; x = 3z x + y +

**z**= 1,000,000; substitute in two of the equations .18z + .07y + .08z = 67,500...2 Answers · Science & Mathematics · 05/07/2009

...9y + 10z = 8640000 32z + 9y + 10z = 8640000 42z + 9y = 8640000 4z+y+

**z**= 1000000 5z + y = 1000000 now two equations 42z + 9y...add –45z – 9y = – 1000000 42z + 9y = 8640000 –3z = 784000 with**a**negative answer, that means the input data is faulty...1 Answers · Science & Mathematics · 03/07/2009

**A**small software**corporation**borrowed $315,000 to expand its software line...solve using matrices???1, 1, 1, 315000 9/100, 1/10, 3/25, 32200 -5/2, 1, 0, 0 Inverse of coefficient matrix times [315000, 32200, 0] 3/2, -25/2, -1/4, 15/4, -125/4, 3/8, -17/4, 175/4, -1/8, Solution: x = 70000; y = 175000;

**z**= 700001 Answers · Science & Mathematics · 14/05/2013

Let x,y, and

**z**be the amount of money borrowed at 8%, 9% and 12% respectively. The whole... money,which is equal to $150,000, is the sum of x,y and**z**. Thus: x+y+**z**=150,000 The total amount of interest ($13,300) ...3 Answers · Science & Mathematics · 16/07/2013

...general form for radioactive decay is xe^(-zy) where x is the initial amount of

**a**substance,**z**is the decay constant, and y is the time elapsed. we can create...4 Answers · Science & Mathematics · 24/12/2012

**a**) You need to find**a****z**-score for 51 pounds and find the area under the curve to the right of that**z**...5**z**= (x - μ)/σ**z**= (51 - 50)/0.5**z**= 1/0.5**z**= 2 Look at**a****z**-table to find the area to the right of**z**= 2. P(**z**>2) = .0227 This...2 Answers · Science & Mathematics · 09/08/2008

...should be using the t-distribution - treating your t-value as

**a****z**-score will give an inflated p-value. Assuming that your t...3 Answers · Science & Mathematics · 17/11/2011