Answer:


Step-by-step explanation:
In the line segment..

Combine like terms.
Add -2 to both sides.
Subtract 9x from both sides.

<h3>__________________</h3>
X + y + 3 = 0
hope this helps!!!^_~!!!
20% = 0.20
multiply original price ( $0) by 0.20 for the amount of discount then subtract it
80*0.20 = 16.00
she will save $16
80-16 = 64
she will pay $64 after the discount
42 runners total

of 42 (14) dropped out in first half.
42 - 14 = 28 remaining.

of 28 (16) dropped out in second half.
28 - 16 = 12 runners finished the race.
Answer:
OB = 8
OC = 8
OA = 8
AC = 16
BD = 16
OD = 8
Step-by-step explanation:
Given, rectangle ABCD, with diagonals AC and BD, and OC = 3x – 4, OB = x + 4,
thus, since diagonals of a rectangle are equal, therefore, AC = BD.
Invariably, 2*OC = 2*OB
Thus, 
Solve for x

Add 8 to both sides


Subtract 2x from both sides


Divide both sides by 4


OB = x + 4 = 4 + 4 = 8
OC = 3x - 4 = 3(4) - 4 = 12 - 4 = 8
OA = OC = 8
AC = 2*OC = 2*8 = 16
BD = 2*OB = 2*8 = 16
OD = OB = 8