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Algebra CAT 2012

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Solve

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Factorise

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Solve

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Simplify

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Show that x = 12 is the only real solution to

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Where a is a positive number. The difference between the solutions to the equation is 10. Find the value of a.

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A square room and a hallway are to have carpet laid on the floor. 123m 2 of carpet is required to cover both the hallway and the room. The width of the hallway is 6m less than the length of the room. The hallway is 5m longer the the length of the room. Write an equation showing this relationship and solve this equation to find the length of the room.

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A square room and a hallway are to have carpet laid on the floor. 123m 2 of carpet is required to cover both the hallway and the room. The width of the hallway is 6m less than the length of the room. The hallway is 5m longer the the length of the room. Write an equation showing this relationship and solve this equation to find the length of the room. x X + 5 X-6 x

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Question 2

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Simplify fully

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Factorise fully the following expression and write in its simplest form

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Expand and simplify

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Simplify

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Solve

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The formula for the volume of a cylinder is Where r is the radius and h is the height of the cylinder. Write the formula for the radius, r, of the cylinder in terms of V, h and π

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The formula for the volume of a cylinder is Where r is the radius and h is the height of the cylinder. Write the formula for the radius, r, of the cylinder in terms of V, h and π

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The length of a straight straw that will just fit in a cylindrical can with a height of 8 cm is given by: Where r is the radius of the can. A straight straw that is 3 times as long (3L) just fits in a larger can that has the same height. Write an expression for the radius of the larger can R in terms of r.

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The length of a straight straw that will just fit in a cylindrical can with a height of 8 cm is given by: Where r is the radius of the can. A straight straw that is 3 times as long (3L) just fits in a larger can that has the same height. Write an expression for the radius of the larger can R in terms of r.

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Question 3 Simplify fully

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Question 3 Simplify fully

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Solve

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Sarah borrows her friend’s car for a holiday. She agrees to pay $7 a day and $1 per kilometre that she travels. Write an equation for the amount P Sarah agrees to pay.

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Sarah borrows her friend’s car for a holiday. She agrees to pay $7 a day and $1 per kilometre that she travels. Write an equation for the amount P Sarah agrees to pay.

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Sarah travelled 185 km and should pay her friend $213. Use your equation to find the number of days Sarah borrowed the car for.

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Sarah travelled 185 km and should pay her friend $213. Use your equation to find the number of days Sarah borrowed the car for.

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Emma is 3 times as old as Tara. In another 7 years Emma will be twice as old as Tara will be. Write at least one equation and use algebra to fine Emma’s age now.

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Emma is 3 times as old as Tara. In another 7 years Emma will be twice as old as Tara will be. Write at least one equation and use algebra to fine Emma’s age now.

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Emma is 3 times as old as Tara. In another 7 years Emma will be twice as old as Tara will be. Write at least one equation and use algebra to fine Emma’s age now.

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If Express x in terms of y

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If Express x in terms of y

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FACTORING QUIZ TODAY! Please turn in your homework on the cart. Make sure you name is on it. Clear your desk. When finished, turn it in on the cart and.

FACTORING QUIZ TODAY! Please turn in your homework on the cart. Make sure you name is on it. Clear your desk. When finished, turn it in on the cart and.

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