Answer:
B
Step-by-step explanation:
Use the formula for radius and circle circumference.
Since we know the diameter, if we divide that by 2, we can get the radius.
Now we can plug that value into the circumference formula to get the circumference.
*Since we're rounding to the nearest inch.
Answer:
Kevin's constant of proportionality,k = $8.25 per hour
Greg's constant of proportionality,k = $9 per hour
Savannah's constant of proportionality,k = $9.5 per hour
Step-by-step explanation:
1. What is the constant of proportionality, k, of Kevin's wage? Greg's? Savannah's?
Solution
y = kx is a proportional variation
Where,
y and x are represent two different variables
k represent constant of proportionality
From the attached table,
Let
y = wages earned (in dollars)
x = hours worked
To find the constant of proportionality k of Kevin's wage, divide the variable y (total earned) by the variable x (number of hours)
Using any points on the table
Take (8,66.00) for example
constant of proportionality k of Kevin's wage = variable y (total earned) / variable x (number of hours)
= 66.00/8
= 8.25
k = $8.25 per hour
B. Constant of proportionality of Greg's wage = variable y (total earned) / variable x (number of hours)
Using (9, 81.00)
k = 81.00/9
= 9
Greg's k = $9 per hour
C. Constant if proportionality of Savannah's wage = variable y (total earned) / variable x (number of hours)
Using (6, 57.00)
k = 57.00/6
= 9.5
Savannah's k = $9.5 per hour
Therefore,
Kevin's constant of proportionality,k = $8.25 per hour
Greg's constant of proportionality,k = $9 per hour
Savannah's constant of proportionality,k = $9.5 per hour
