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1. IES Al Lawra 2015/16
Ejercicios repaso Tercera evaluación 2º ESO
1.- Solve these equations:
a) 4+x=2+
2
3x
b) 94=
5
x
+
4
x
+
3
x
2.-An ice-cream costs 80 cents more than a cake. Kate and George had an ice-cream and
two cakes for tea, and it all cost € 4,40. How much does a cake cost? And, how much is an
ice-cream?
3- Solve these incompleted quadratic equations: a)
2
x 6x 0− = b)
2
4x 9 0− =
4.-Solve these completed quadratic equations: a) x2
-7x+12=0 b) x2
-9x+18=0
5.-Solve using substitution method: a)



=−−
−=+
5y5x10
25y4x
6.-Resuelve usando igualación: a)


−
3 5 15
2 3 9
+ =
− =
x y
x y
7.-Resuelve por reducción: a )



=+
=−
853
134
yx
yx
8. Calcula x e y en:
9.-The legs of a right-angled tringle are 30m and 40m long. Find the length of the
hypotenuse. Calcula su perímetro y área.
10.-The hypotenuse of a right angle is 10m, and one leg is 6m. Find the lenght of the other
leg.
11.- Calcula el área de un rombo de lado 6cm y diagonal mayor 10cm.
12.- Calcula el área de un hexágono de 7cm de lado