Answer:
Indirect variation
Step-by-step explanation:
If two variables change in inverse proportion, then it is called indirect variation.
xy = k where k is a constant.
5*2 = 10
10*1 =10
So, this is indirect variation.
4: 1 because you could divide both sides of the ratio by 25
Answer:
x + y = 320
8x + 5y = 1900
Step-by-step explanation:
The equation x + y = 320 represents how 320 tickets were sold in total, from combining the adult and child tickets sold.
Since adult tickets are $8 each, the money from adult ticket sales can be represented by 8x.
The money from child ticket sales can be represented by 5y.
The equation 8x + 5y = 1900 represents how $1900 worth of tickets were sold.
So, the system of equations for the situation is:
x + y = 320
8x + 5y = 1900
Answer:
A ≈ 24.6 units²
Step-by-step explanation:
Given 2 sides and the included angle ( angle between the 2 sides ) then the area (A) is calculated as
A = ab sinC
Here a = 12, b = 5 and C = 55° , then
A = × 12 × 5 × sin55° = 30 × sin55° ≈ 24.6 units²
The answer is 3,087. Hope this helped! :)