Answer:
The arithmetic combinations of given functions are (f + g)(x) = 2x, (f - g)(x) = 4, (f g)(x) = ,
Solution:
Given, two functions are f(x) = x + 2 and g(x) = x – 2
We need to find the arithmetic combinations of given two functions.
Arithmetic functions of f(x) and g(x) are (f + g)(x), (f – g)(x), (f g)(x),
Now, (f + g)(x) = f(x) + g(x)
= x + 2 +x – 2
= 2x
Therefore (f + g)(x) = 2x
similarly,
(f - g)(x) = f(x) - g(x)
= x + 2 –(x – 2)
= x + 2 –x + 2
= 4
Therefore (f - g)(x) = 4
similarly,
(f g)(x) = f(x) g(x)
= (x + 2) (x – 2)
= x (x – 2) + 2 (x -2)
Therefore (f g)(x) =
now,
=
Hence arithmetic combinations of given functions are (f + g)(x) = 2x, (f - g)(x) = 4, (f g)(x) = ,
G.C.F is called greatest common factor.It is the number that divides both the numbers. For example GCF of 2 ad 4 is 2.
GCF of 6 and 9 is 3.
GCF of 8 and 25 is 1. If there is no common number that divides both the numbers then in that case GCF=1.
The statement The gcf of two numbers is equal to the lesser of the numbers is not always but sometimes true.
for $95.94. The crate had 6 boxes of floor tiles. Each box
1. contained 20 floor tiles. Write and solve an
equation to determine the cost per box, b. Then
write and solve a second equation to determine the cost per tile, t, to the nearest cent.
2. A convenience store sells two brands of orange juice. Brand A contains 8 fluid ounces and
costs $1.28. Brand B contains 12 fluid ounces and costs $1.68. What is the difference in cost, in
dollars, per fluid ounce between the two brands of juice?
Answers with working:
1.
Cost of a crate of floor tiles = $95.94
The crate has 6 boxes of floor tiles. This means 6 boxes of tiles cost $95.94
Now each box has 20 floor tiles.
So, total tiles in a box are : tiles
Now, cost of 6 boxes = $95.94
So, cost of 1 box (b) = = $15.99
20 tiles cost $15.99
Hence, 1 tile (t) will cost = = $0.799 ≈ $0.80
2.
Brand A contains 8 fluid ounces and costs $1.28.
Cost of per fluid ounce = = $0.16
Brand B contains 12 fluid ounces and costs $1.68.
Cost of per ounce = = $0.14
Difference between both the per ounce costs = = $0.02