Answer:
see explanation
Step-by-step explanation:
Given that y varies inversely as x then the equation relating them is
y =
← k is the constant of variation
To find k use the condition that x = 9 when y = 15
15 =
( multiply both sides by 9 )
k = 135
y =
← equation of variation
Answer:
90 stamps
Step-by-step explanation:
We can solve this by writing an equation.
(38+26)+26
64+26
90
Therefore, they have 90 stamps altogether.
Answer:
26
Step-by-step explanation:
Answer:
133.04ft²
Step-by-step explanation:
Area of a circle is:

We are given the diameter. The radius of the given circle is 6. Note that the diameter is twice the radius.
Using 3.14 for pi:

The area is appropriately 133.04ft².
Hope this helps.
Answer:
Triangle Sum Theory
Step-by-step explanation:
You add all the angles to get 180