maths wiz

simplify

13a - 9a -3a=

• a

• -a

• 1a

• -1a

Expand

5(a-3) =

• 15-5a

• 5a-15

• 5a-15a

• 5a+15

Factorize

ab+ac=

• a(b+c)

• ab(1+c)

• 2a+b+c

• a(b-c)

What is the mean of 7 , 5 , 6 , 2, 2, 3 , 7, 7 , 6

• 45

• 5

• 6

• 9

What is the mode of the following numbers?

7, 5, 5, 4, 3 , 4 , 5, 6 ,3

• 3

• 7

• 5

• 6

What is the range of the following numbers?

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

• 7

• 4

• 3

• 5

factors of 15

• 1,2,3,5,15

• 1,3,5,15

• 1,5,15

• 15,30,45,60...

• obtuse triangle

• right angle triangle

• isosceles triangle

• right triangle

• obtuse triangle

• acute triangle

• isosceles triangle

• equilateral triangle

 $\pi$  = 

• 31.4

• 3.14

• 3.04

• 1.34