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3 years ago

Solve for y. Then find the values of y that correspond

Mathematics

1 answer:

julsineya [31]3 years ago

6 0

y + 8x = -2

f(x) = y = -8x - 2

f(0)=-2, f(1)=-10, f(2)=-18, f(-2)=14

12x + 3y = 15

3y = -12x + 15

f(x) = y = -4x + 5

f(-1)=9, f(0)=5, f(1)=1

y - 3x = 9

f(x) = y = 3x + 9

f(-2)=3, f(0)=9, f(2)=15

10.

0.4y + 2x = 1.2

4y + 20x = 12

4y = -20x + 12

f(x) = y = -5x + 3

f(-3) = 18, f(0)=3

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Say you have ten stones, and you tell me "I'll let you pick out two stones
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So the total number of 'ways' to pick out two stones is (10 x 9) = 90 ways.

But let's look at 2 of those ways:
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So there are 90 ways to pick a pair, but only 45 different pairs.

That's the reason for the difference between the number of ways the
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So now here's the answer to the question:

-- Two appetizers can be selected in (6 x 5) = 30 ways.
(But each pair can be selected in 2 of those ways,
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-- Three main courses can be selected in (10 x 9 x 8) = 720 ways.
(But each trio can be selected in 3*2=6 of those ways,
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-- Two desserts can be selected in (8 x 7) = 56 ways.
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-- The whole line-up can be selected in (30 x 720 x 56) = 1,209,600 ways.

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Answer:

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