This is a linear function. Let diameter (inches) be x, circumference (inches) be y, observe that the value of y/x is always 3.14. For example, 15.7/5=31.4/10=...=3.14. Therefore, this is not only a function (one to one correspondence from x to y), it's also a linear function that can be represented as y=3.14x.
Answer:
AB = 
Step-by-step explanation:
calculate the distance using the distance formula
d = 
with (x₁, y₁ ) = B (3, 2 ) and (x₂, y₂ ) = A (7, 4 )
AB = 
= 
= 
= 
≈ 4.47 ( to 2 dec. places )
Answer:
d = 70t
Step-by-step explanation:
The units of speed tell you how to write the equation.
speed = miles/hour
Multiplying by hours gives ...
speed · hours = miles
Using the required variables and the given speed, you have ...
70t = d . . . . . time in hours, distance in miles
Answer:
(a)

(b)$2
Step-by-step explanation:
In the given game of rolling a die. these are the possible winnings.
- If the number showing is even(2, 4, or 6) or 1, you win $3.
- If the number showing is either 3 or 5 you win $0.
There are 6 sides in the die.

(i)The probability distribution of x.
Let x be the amount won
Therefore:
Probability distribution of x.

(ii) Expected amount of dollar won
Expected Amount

You would expect to win $2.