Molly works at an electronics store. Her last customer purchased a DVD player for $67.65 and five DVDs for $57.93, including tax
es. If the customer paid her with two $100 bills, how much change should she give him?
1 answer:
67.65 + 57.93 = 125.58
200.00 - 125.58 = $74.42 change back
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Responder:
x = 40
y = 120
z = 80
Explicación paso a paso:
Número dividido = 240
Las 3 partes:
x, y, z
y = 3x
Z = 3x - 40
x + y + z = 240
x + 3x + 3x - 40 = 240
7x - 40 = 240
7x = 240 + 40
7x = 280
x = 280/7
x = 40
y = 3 (40)
y = 120
z = 3x - 40
z = 3 (40) - 40
z = 120 - 40
z = 80
They are driving in opposite directions, so the velocities need to be added together.
65+85=150
375/150=2.5 hours, or 150 mins
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Answer:
B (-1, 1.5)
Step-by-step explanation:
Add the x coordinates together and divide by 2: (-4 + 2) = -2/2 = -1.
The only option with (-1) as an x-coordinate is B, and that is the answer.
A and B
I hoped it helped you
