Answer:
Step-by-step explanation:
A) 5x = 3(x - 2.5)
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B)
Distribute
5x = 3x - 7.5
Subtract 3x from both sides
2x = -7.5
Divde both sides by 2
x = -3.75
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C)
5 * (-3.75) = 3(-3.75 - 2.5)
-18.75 = -18.75
D)
Tanya paid –$3.75 for each of 5 items
Tony paid –$6.25 for each of 3 items
There seems to be an error in the question since the cost of items is negative
Tony bought fewer items and paid less for each.
Answer:
x45
Step-by-step explanation:
Answer:
x=20
Step-by-step explanation:
You make an equation (4x+100=180) and solve
4x=80---> x=20
Answer:
1. X² -2x-24= 0
2. X² -3x+2= 0
3. 2x² -7x -8= 0
4. 3x² + 38x +24= 0
Step-by-step explanation:
1.(-4,6)
(X+4)(x-6)= 0
X² -6x + 4x -24= 0
X² -2x-24=0
2.(1,2)
(X-1)(x-2)=0
X²-2x-x+2=0
X²-3x+2=0
3.(8,-1/2)
(X-8)(x+1/2)=0
X² +1/2x -8x -4=0
X² -7/2x -4=0
2x² -7x -8=0
4.(-2/3,-12)
(X+2/3)(x+12)=0
X² + 12x +2/3x + 8=0
3x² + 38x +24=0
