Answer:
11
Step-by-step explanation:
Expanding:-
-4x - 18 > -4x - 9
add 4x to both sides
-18 > -9
this is obviously untrue so this inequality is never true
Answer:
-3 and it is a negative whole number
-3/1 is a negative integer
Step-by-step explanation:
-3/1 divide -3 by one which is always the same number you are dividing by and you'll get -3
Answer:
a) ( r+ s) (x) = 3 x + 9
b) ( r . s ) (x) = 2 x² + 13 x +20
c) ( r- s) (x) = -1 -x
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Given that r(x) = x +4 and s(x) = 2x + 5
a) ( r+ s) (x) = r(x) + s(x)
= x +4 + 2x +5
= 3 x + 9
<em> ( r+ s) (x) = 3 x + 9</em>
b)
( r . s ) (x) = r(x) . s(x)
= (x+4) . ( 2x +5)
= x ( 2x +5) + 4( 2x +5)
= 2 x² + 5 x + 8 x +20
= 2 x² + 13 x +20
<em> ( r . s ) (x) = 2 x² + 13 x +20</em>
c)
( r- s) (x) = r(x) - s(x)
= (x+4 - ( 2x +5)
= x +4 - 2x -5
= -x -1
<em> ( r- s) (x) = -1 -x</em>
Volume = length times width times height.
In this case the length is 12cm, the width is 8cm, and the height is 8cm.
12x8x8 = 768cm