Maths

Stats

100

Find the mode

1, 4, 4, 5, 1, 6, 6, 2, 3, 7, 7, 4, 1

4

200

Find the mean to 3 d.p.

1, 1, 4, 8, 1, 9, 6, 2, 3, 9, 7, 2, 1

4.154

300

Find the standard deviation to 3 d.p.

3, 4, 2, 5, 1, 9, 5, 2, 2, 7, 7, 4, 1

2.418

400

Find the 5 number summary

1, 4, 4, 5, 1, 6, 6, 2, 3, 7, 7, 4, 1

(1, 1.5, 4, 6, 7)

500

Draw a boxplot for

1, 2, 3, 4, 5, 6, 7, 8, 2, 2, 5, 4, 3, 6

Any sort of boxplot looking type thingy that's probably right-ish.

Trigonometry

100

Find x to 3 d.p.

cos(45) = x

0.707

200

Find x to 3 d.p.

sin(x)=0.65

x=40.542

300

Find x to 3 d.p.

tan(30) = ^x/₄

x = 2.309

400

Find x to 3 d.p.

cos(20) = ⁷/_x

x = 7.449

500

A triangle has hypotenuse length 4x, and a second side length x + 3. The angle between these 2 sides is 60 degrees.

Find x.

x = 3

Equations

100

2x-6=12

x=9

200

5y - 3 = 2y

y=1

300

3(x + 6) = 4(2 - x)

x = -¹⁰/₇

400

5x² - 8 = 72

x = 4 or x = -4

500

Find k 

3x + 7 = x² + k = 7x + 15

k = 25

More Equations

100

4x+12=20

x=2

200

5y = 3y - 2

x = -1

300

2x - 5 = x - 9

x = -4

400

8(x - 4) = 5(x - 3)

x = ¹⁷/₃

500

0=2x²

x = 0

Number

100

1+2+3+4+5+6+7+8+9+10

55

200

7 x 6 x 5 x 4 x 3 x 2 x 1 x 0

0

300

413 x 23

3289

400

Name a square number that is a factor of 200, is one more than a multiple of 4, and is 2 less than a multiple of 9.

25

500

A price of an item is reduced by 12%. It now costs $57.

How much did it cost before it was reduced?

$64.77