Answer:
9:18
Step-by-step explanation:
1:2 means that you have to multiply the first number by 2 to get the second number. Therefore, you have to multiply 9 by 2, which is equal to 18. Therefore, it would be 9:18.
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Answer:
B
Step-by-step explanation:
rahman's collection represents the 5x and Elissa's represents the singluar x. Rahman has five times as many as Elissa, 5x is five timas as big as x. this means x=20. Rahman has 5x20=100 DVDs and Elissa has just 20.
Answer:

Step-by-step explanation:
add all qestions together 10+3+9=22
and put the number of free responces on top of the total number of qestions

and you cant simplify it so its in its simplist form
4.5x = 18
4.5x/4.5 = 18/4.5
x = 4
Answer:
see explanation
Step-by-step explanation:
Using the rule of radicals
×
⇔
, thus

= 
= 
= 
=
← cancel 
= 2
-----------------------------------------------------------------------------
(a)
Given
9
- 4
+
+ 2
Collect like radicals, that is
(9 - 4)
+ (1 + 2)
= 5
+ 3
(b)
Given
10
+ 4
- 6
Collect like radicals
= (10 - 6)
+ 4
= 4
+ 4