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Tcecarenko [31]
4 years ago
11

The cost of 3 large candles and 5 small candles is $6.40. the cost of 4 large candles and 6 small candles is $7.50. which pair o

f equations can be used to determine, t, the cost of a large candle, and s, the cost of a small candle?
a.
b.
c.
d.
Mathematics
2 answers:
cricket20 [7]4 years ago
8 0
T = large candles and s = small candles

3t + 5s = 6.40
4t + 6s = 7.50

^^ this would be ur system of equations
antiseptic1488 [7]4 years ago
6 0

Answer:

3t + 5s = 6.40

4t + 6s = 7.50

These two equations can be used to determine, t, the cost of a large candle, and s, the cost of a small candle.

Step-by-step explanation:

Let the the letters  t represents the cost of a large candle, and s represents the cost of a small candle.

The cost of 3 large candles and 5 small candles is $6.40

          3t + 5s = 6.40

The cost of 4 large candles and 6 small candles is $7.50

          4t + 6s = 7.50

These two equations can be used to determine, t, the cost of a large candle, and s, the cost of a small candle.

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Answer:

9pr = 2q^2

Step-by-step explanation:

28.

px^2 + qx + r = 0

If one root is A then the other root is 2A

We have A + 2A = -q/p   and A*2A = r/p

So 3A = -q/p  so A = -q/3p and  A^2  = r/2p  so A = √ (r / 2p)

Equating  these 2 equations:-

-q/3p =  √(r / 2p)

q^2 / 9p^2 = r / 2p

9p^2r = 2pq^2

9pr = 2q^2   (answer)


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Carlos drove to the train station and back. The trip there took five hours and the trip back took four hours. What was Carlos' a
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Answer: 54.4 mph

Step-by-step explanation:

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This means that Carlos drove for 5 hours to cover 272 miles the first time. His average speed was therefore:

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Step-by-step explanation:

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