Answer:

Step-by-step explanation:
Let x be the number of games
Cost of 1 game = $9
Cost of x games = 9x
he gets a student discount of $10.
So, Cost after discount = 9x-10
Let the total cost be T
So, 
So, An equation to represent the total cost of playing laser tag including the discount is 
Answer:
X=7
Step-by-step explanation:
HJ + JK = HK
3(X + 2) +(3X - 4) = 44
3X + 6 + 3X - 4 = 44
6X + 2 = 44
6X = 42
X = 7
Decomposing plants and other organisms, buried beneath layers of sediment and rock, have taken millennia to become the carbon-rich deposits we now call fossil fuels
Answer:
50 cm² and 56 cm²
Step-by-step explanation:
The area (A) is calculated as
A =
× d₁ × d₂ ( d₁ and d₂ are the length of the diagonals )
(2)
A =
× (8 + 2) × (5 + 5)
= 0.5 × 10 × 10
= 5 × 10
= 50 cm²
(3)
A =
× (12 + 2) × (4 + 4)
= 0.5 × 14 × 8
= 7 × 8
= 56 cm²
Here the two angles are supplementary, which means sum of these angles equal to 180 degrees.
So equation is:
10x-20+6x+8=180
Add like terms
16x-12=180
16x=192
x=12
Answer: x=12