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MATH WORKSHOP 3 º ESO, IES NIT DE L'ALBA

SYSTEMS OF EQUATIONS, 22 MARCH 2010
complete the following on a sheet and hand it the end of class the teacher.

1 .- Internet Search: What is a linear equation with two unknowns? Place several examples. Also, what is a system of equations and what is it? Place several examples.

2 .- Solve this system of equations with the calculator WIRIS. See first how to solve systems of equations wiris: Click HERE

Wiris Calculator

3 .- Problems: ( raises each of the problems, solve them with Wiris and see which are good)

a) On a farm there are rabbits and ducks. If we all join 18 heads and 52 legs, how many rabbits and ducks are there?

b) A hotel has double rooms (2 beds) and single (1 bed). In total there are 50 rooms and 87 beds. How many rooms does each type?

c) In my class are 35 students. We have given our strong performance by each girl 2 pens and a notebook for each child. If in total have been 55 gifts, how many boys and girls are in my class?

d) On the premiere of a movie sold 600 tickets and raised £ 196,250. If adults pay 400 pesetas. and children 150 pts. What is the number of adults and children who attended?

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