prep3

prep 3

prep 3 algebra first term unit 2 lesson 3

Multiple Choice

If x , 8 and x² are in proportion , Then x = …………

• 64

• 4

• 16

• 8

Multiple Choice

The proportional mean of 

 $3ab^2$  and  $27a^3b^2$  is .....

•  $\pm3ab$  

•  $9a^2b^2$  

• 3ab

•  $\pm9a^2b^2$  

Multiple Choice

The third proportion of the two numbers 3 and 6 is ………..  

• 12

• 2

•  $\frac{3}{2}$ 

• 18

Multiple Choice

If 1 , x , 9 , y are in continued proportion then Y = ……... 

•  $\pm3$  

• 3

•  $\pm27$  

• 27

Multiple Choice

 $if\ \frac{a}{b}=\frac{b}{c}=\frac{c}{3}=2$  then a = ………. 

• 6

• 8

• 12

• 24

Multiple Choice

If 2, 6 , x + 15 are proportional then x = ……….

• 1

• 2

• 3

• 4

Multiple Choice

If L,M, Z are in continued proportion, then L = ……..

• $\frac{M}{Z}$

• $\frac{M^2}{Z}$

• $\pm\sqrt{MZ}$

• $\sqrt{MZ}$