Answer:
$1.50 per song
Step-by-step explanation:
You divide $22.50 by 15 to get the cost per song.
Answer:
A. 27.50 = 5.50 + 2.75h
B. 8 hours
C. 9 hours
Step-by-step explanation:
Total spent = $27.50
Base fee = $5.50
Hourly rate = $2.75
A. Create an equation that can be used to determine how many additional hours, ℎ, Rose parked her car in the garage
Total cost = fixed cost + variable cost
27.50 = 5.50 + 2.75h
B: Solve the equation to determine the number of additional hours, ℎ, Rose parked her car in the garage.
27.50 = 5.50 + 2.75h
Subtract 5.50 from both sides
27.50 - 5.50 = 5.50 - 5.50 + 2.75h
22 = 2.75h
Divide both sides by 2.75
h = 22/2.75
= 8
h = 8 hours
C: What is the total number of hours that Rose parked her car in the garage
Total number of hours = first hour + additional hours
= 1 + 8
= 9 hours
Its 10 times more ..................... :)
Answer:
see explanation
Step-by-step explanation:
Using the Cosine rule
a² = b² + c² - 2abcosA ← Rearranging for cosA gives
cosA = 
(a)
let a = 10, b = 7, c = 8 and A = α, then
cosα = 
= 
= 
, thus
α = 
( ) ≈ 83° ( to the nearest degree )
(b)
let the angle opposite side 7 be x
Using the Sine rule
= 
( cross- multiply )
10sinx = 7sin83 ( divide both sides by 10 )
sinx = 
, thus
x = 
( ) = 44°
The third angle can be found using the sum of angles in a triangle
third angle = 180° - (83 + 44)° = 180° - 127° = 53°
The 3 angles are 83°, 44°, 53°
