REVISION

What is the range of 5, 4, 10, 5, 6, 0, 7,10

• 15

• 10

• 7

• 0

what is the mode for, 7, 6.5, 8, 7, 5, 6.5, 9, 7

• 7

• 6.5

• 5

• 4

what is the mean for: 10, 7, 12, 15, 8, 6 and 5?

if a= 4 and b= 2, what is a^b ?

• 16

• 8

• 4

• 2

(x-4)(2x+7)=

• 2x - x + 28

• 2x² -15x - 28

• 2x² - x - 28

• 2x² + 15x - 28

If a*b=√(ab-b²), evaluate 6 * 2

• √8

• 8

• 12

• 60

4(x-2)-3(x-2)=1, solve for x

if x is an integer that satisfies the inequality 8 < 4x ≤ 24, then

• 1< x ≤ 3

• 2 < 4x ≤ 6

• 2 < x ≤ 6

• -2 ≤ x ≤ 6

1. The sum of two numbers a and b is 26 and their difference is 12. Which pair of equations below describes the above statement?

• a + b = 38

  a - b = 12

• 2a + 2b = 26

  2a - 2b = 12

• ab = 26

  ab = 12

• a + b = 26

  a - b = 12

factorize 4x² - 25