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Solving Equations for x

100

1/2 ( 5x - 6 ) = 3x

x = -6

200

5/6 x - 10 = 1/3 x - 5

x = 10

300

16.5 + 1.5r = 12 + 2r

r = 9

400

5 + 3 ( y - 4 ) = 5 ( y + 2 ) -y

y = -17

500

x + 0.7 = 1 - 0.2x

x = 0.25

Find Slope y1 -y2/x1 - x2

100

( 0, 1 )    ( 4, 9 )

m = 2

200

( 4, 1 )  ( 2, 5 )

m = -2

300

( 6, 6 )  ( 8, 7 )

m = 1/2

400

( -3, 5 )  ( 0, 1 )

m = -4/3

500

( 2, 4 )   ( 5, 4 )

m = 0 ( horizontal line )

Scientific Notation

100

36,300

3.63 x 10⁴

200

.000142

1.42 x 10^-4

300

0.0000007

7.0 x 10^-7

400

.25 x 10⁵

2.5 x 10⁶

500

900.62 x 10²

9.0062 x 10⁴

Square and Cube Roots

100

square root of 1,000,000

+ or - 1000

200

square root of 400

+ or - 20

300

square root of 225

= or - 15

400

cube root of a³

3

500

cube root of -8

-2

Volume of Cone, Sphere and Cylinder

100

find volume/cylinder ( height= 10in and radius= 6in ).

1130.4 in³

200

find volume of a sphere( radius = 5in. )

523.3......in³

300

find the volume of a cone ( radius= 3 in., height= 7 in.)

65.94 in³

400

find the volume of a cylinder ( diameter = 4 ft., height = 6.5 ft. )

81.64 ft.³

500

find the volume of a sphere ( diameter = 8 cm )

267.9 cm³