Answer:
x = 118
Step-by-step explanation:
1. All the angles in a pentagon add up to 540, so to find the value of x, we can use this equation x + 122 + 103 + 98 + 99 = 540.
2. (Solving)
Step One: Simplify both sides of the equation by adding like terms.
- (x) + (122 + 103 + 98 + 99) = 540
- x + 422 = 540
Step Two: Subtract 422 from both sides.
- x + 422 - 422 = 540 - 422
- x = 18
From the system of equation
x+2y-2z=3
3x-y+z=16
x+z=7
we solve the system as follows:
add equation i and ii
x+2y-2z=3
6x-2y+2z=32
7x=35
x=5
thus
z=2
2y+5-4=3
2y=2
y=1
hence
x=5, y=1 z=2
Each pair of socks cost 1.75 because 22.95 - 8.95= 14 and 14 divided by 8 = 1.75! hope this helps!:)
Answer:
3x - 125 = -5
Step-by-step explanation:
the 3 is the triple, x is the deposit and -125 is the withdrawn and -5 is what's left over in the bank account