Algebra :D
Decimals >:)
Perfect Squares ._.
Radicals :-)
Area :P
100

Find x.
2x + 3 = 5

x =1

100

0,7 + 0,3

1

100

72 + 22

49 + 4 = 53

100

√81

9

100

Find the area of the square.
a = 4cm

Area = 4cm x 4cm = 16cm2

200

True or False?
2x + x2 = 3x

False

200

1,9 - 0,08

1,82

200

32 + 22 - 42

9 + 4  - 16 = -3

200

√36 + √64

6 + 8 = 14

200

Find the area of the rectangle.
a = 2cm
b = 10cm

Area = 2cm x 10cm = 20cm2

300

Solve x and y.
2(x + 3y) = 14x

x = 0,5y

y = 2x

300

0,2 (3,2 + 8)

0,64 + 1,6 = 2,24

300

(9)2/(10)2  + (3)2/(10)2

81/100 + 9/100 = 90/100 = 0,9

300

 √9          3
-----   +  ----
√25         5

3/5 + 3/5 = 6/5 = 1 1/5 = 1,2

300

Find the area of the triangle.
a = 6cm
h = 5cm

Area = (5 x 6) / 2 = 30 / 2 = 15cm2

400

Find x.
3x + 6 -x + 2/3 = 4x +5

x = 5/6

400

1,2
-----     x    40
  8

6

400

302/502

900/2500

400

√32 + √2

4√ 2 + √ 2 = 5√ 2

400

Find the area of the rhombus.
Diagonal a = 6cm
Diagonal b = 12cm

Area = (6 x 12) /2 = 72 / 2 = 36cm2

500

Solve x.
6x + 8 - 6x - 3 = 4x + 8 +6

x = -2 1/4 = -2,25

500

2,5 + 0,74 (2/3 x 3/2)

2,5 + 1,74 = 4,24

500

[(42 + 92) - 102] 2

[(16 + 81) - 100]2 = [-3]2 = 9

500

√128 + 2√2
--------------
      2√2

8√ 2 + 2√ 2       =      8√2
--------------
      2√2

500

Find the area of the trapezoid.
a = 7cm

b = 13cm

h = 5cm

Area = (7 + 13) x 5         =   20 x 5        =
           --------------             ---------
                   2                          2

= 100/2 = 50cm2