Answer:
a.(-b) ( third choice)
explanation:
-a+b - there is no plus sign for -a.b.
not -a+b
(-a)(-6)=6a (-negative sign and -negative sign=+positive sign)
Answer:
840
Step-by-step explanation:
Given
Required
Determine the number of rankings
The term "ranking" as used in this question implies permutation and the required is calculated using:
Where
So:
<em>Hence, number of ranking is 840</em>
Answer:
Domain (0, ∞)
Range (-∞, ∞)
Step-by-step explanation:
The domain is the input values
The input is from 0 to infinity
Domain (0, ∞)
The range is the output values
The input is from negative infinity to infinity
Range (-∞, ∞)
Answer:
(h,k) shows the coordintes of the turning point.
2r + 2r + 5 + r + 4r - 3 = 38
9r + 5 - 3 = 38
9r + 2 = 38
9r = 38 - 2
9r = 36
9r/9 = 36/9
r = 4cm
Done!
