Answer:
Slope of a tangent to the curve =
Step-by-step explanation:
Given - y = 1/x+1
To find - Identify each expression that represents the slope of a tangent to the curve y=1/x+1 at any point (x,y) .
Proof -
We know that,
Slope of tangent line = f'(x) =
We have,
f(x) = y =
So,
f(x+h) =
Now,
Slope = f'(x)
And
∴ we get
Slope of a tangent to the curve =
Answer:
80 ÷ 16 = 5
Step-by-step explanation:
The "family facts" seem to be related to the relationship ...
5 × 16 = 80
One of the facts is generated from this one by reversing the order of the factors:
16 × 5 = 80
The other two are found by dividing the equation by one or the other of the factors:
16 = 80/5 . . . . . divide by 5
5 = 80/16 . . . . . divide by 16
This last one is the one that is missing. It the form used in the problem statement, it is ...
80 : 16 = 5
B is true.
I think E is also true.
Answer:
Let's say that x is sam's age and y is Amy's age
x=y-4
and five years ago:
x-5=(y-5)/2
y-4-5=(y-5)/2
2y-18=y-5
y=13
x=9
then:
sam's age is 9 and Amy's age is 13