In a vending machine, there were 27 coins, all dimes and quarters. The total value of the money was $5.10.

Mathematics

1 answer:

amm18123 years ago

5 0

Answer:

11 dimes and 16 quarters

Step-by-step explanation:

system of equations lol

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Which of the following represents the graph of f(x) = 3x2 - 12 ?

xxMikexx [17]

F(x) = 3x² - 12

Finding where the graph crosses the axes will help us to determine the correct graph

When x = 0,
f(0) = 3(0)² - 12
f(0) = -12

So we have one point (0, -12)

When y = 0
0 = 3x² - 12
12 = 3x²
4 = x²
√4 = x
x = ⁺/₋ 2

So the graph crosses the x-axis at -2 and 2 and the y-axis at -12

The correct graph is option A

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