# many application of linear algebra in our daily life

May 29th, 2015
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As we had already knew, Linear Algebra is a branch of mathematics that is concerned with mathematical structures closed under the operations of addition and scalar multiplication and that includes the theory of systems of linear

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Algebra Word Problems Practice Test1. How much 10% alcohol solution should be mixed with 14 ounces of 18% solution to get a 12% solution?(a)of an ounce(b) 42 ounces(c) 4.2 ounces(d) 14 ounces2. The perimeter of a rectangle is 56 inches and the width is three-fourths of the length. What is the length?(a) 12 inches(b) 16 inches(c) 8.64 inches(d) 36inches3. What is 15% of 30?(a) 4.5(b) 2(c) 200(d) 4504. If the daily profit formula for a certain product isP= 7q 5600, wherePis the profit in dollars andqis the number sold per day, how many units must be sold per day to break even?(a) 600(b) 700(c) 800(d) No quantity can be sold to break even5. At 3:00 one car heading north on a freeway passes an exit ramp averaging 60 mph. Another northbound car passes the same exit ramp 10 minutes later averaging 65 mph. When will the second car pass the first?(a) 4:00(b) 4:15(c) 5:00(d) 5:106. The difference between two numbers is 12 and twice the larger is three times the smaller. What is the smaller number?(a) 12(b) 24(c) 36(d) 487. A jacket is on sale for \$84, which is 20% off the original price. What is the original price?(a) \$110(b) \$105(c) \$70(d) \$100.808. When the radius of a circle is increased by 2 cm, the area is increased by 16 cm2. What is the radius of the original circle?(a) 4cm(b) 5cm(c) 2cm(d) 3cm9. Theresa is 4 years older than Linda but 7 years younger than Charles. The sum of their ag

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