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Artemon [7]
2 years ago
13

I NEED MORE HELP..........

Mathematics
1 answer:
Vesnalui [34]2 years ago
4 0

Answer:

<em>f(g(x)) = 8x² + 18x - 8 </em>

Step-by-step explanation:

f(x) = 2x² - 5x - 15

g(x) = - 2x - 1

f(g(x)) = y

y = 2( - 2x - 1 )² - 5( - 2x - 1 ) - 15 =

2(4x² + 4x + 1) + 10x + 5 - 15 =

8x² + 8x + 2 + 10x + 5 - 15 =

<em>f(g(x)) = 8x² + 18x - 8</em>

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You sell small and large candles at a craft fair. You collect $144 selling a total of 28 candles. How many of each type of candl
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Answer:

The number of

Small candles = x = 12 candles

Large candles = y = 16 candles

Step-by-step explanation:

You sell small and large candles at a craft fair. You collect $144 selling a total of 28 candles. How many of each type of candle did you sell? A photo shows a small candle labeled 4 dollars each and a large candle labeled 6 dollars each.

Let the number of

Small candles = x

Large candles = y

Our system of equations is:

x + y = 28 .......... Equation 1

x = 28 - y

A photo shows a small candle labeled 4 dollars each and a large candle labeled 6 dollars each.

4x + 6y = 144......... Equation 2

Substitute 28 - y for x in Equation 2

4(28 - y) + 6y = 144

112 - 4y + 6y = 144

- 4y + 6y = 144 - 112

2y = 32

y = 32/2

y = 16 candles

x = 28 - y

x = 28 - 16

x = 12 candles

Therefore:

The number of

Small candles = x = 12 candles

Large candles = y = 16 candles

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3 years ago
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Ilia_Sergeevich [38]
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3 years ago
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Answer:

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Answer:

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