Answer:
A f(x) is a negative number
Step-by-step explanation:
Lets see what happens
f(x) = 1/x
Let x get smaller and smaller from the negative side
x = -1/2
f(-1/2) = 1/ (-1/2) = -2
x = -1/3
f(-1/3) = 1/ (-1/3) = -3
x = -1/10
f(-1/10) = 1/-1/10 = -10
What is happening
As we get closer to zero from the negative side, f(x) gets larger and more negative
Answer:
- not possible: 1, 2, 4, 5, 8, 11
- possible: all others
Step-by-step explanation:
Obviously, all multiples of 3 and 7 can be paid.
1 cent can be added by adding a 7-cent stamp and taking away two 3-cent stamps. 2 cents can be added by adding three 3-cent stamps and taking away one 7-cent stamp. Hence any value more than 7 +2(3) = 13 cents can always be accommodated.
Amounts that are impossible:
1, 2, 4, 5, 8, 11 cents
All other positive integer amounts are possible.
Answer:
x
Step-by-step explanation:
The cube root of x to the power of 3 is
(
)³ = (
)³ = x
or
= x
Answer:

Step-by-step explanation:
we would like to compute the following limit

if we substitute 16 directly we'd end up


which isn't a good answer now notice that we have a square root on the denominator so we can rationalise the denominator to do so multiply the expression by √x+4/√x+4 which yields:

simplify which yields:

we can reduce fraction so that yields:


now it's safe enough to substitute 16 thus
substitute:

simplify square root:

simplify addition:

hence,
