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My name is Ann [436]
2 years ago
9

3 teas and 2 coffees have a total cost of £7.80.

Mathematics
1 answer:
jasenka [17]2 years ago
5 0

Answer:

coffee is £1.80 per cup and tea is £1.40 per cup

Step by Step:

The question can be written algebraically, as:(a) 3t + 2c = 7.80(b) 5t + 4c = 14.20To work out the individual costs, we need to make one of the sets of variables equal. We can do this by multiplying the equation (a), giving (c):(a) 6t + 4c = 15.60(c) 5t + 4c = 14.20We can then subtract (c) from (a), giving:t = 1.40T can then be substituted into the initial equation (a), to work out the value of c:(3 x 1.40) +2c = 7.804.20 +2c = 7.802c = 3.60c = 1.80Finally we can check these values by substituting into (b):(5 x 1.40) + (4 x 1.80) = 7 + 7.2 = 14.20Then make sure to show your answers clearly, with units:coffee is £1.80 per cup and tea is £1.40 per cup

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What is the slope of the line with the equation 3x = -y − 5
prisoha [69]

This equation is written in <em>standard form</em>, so we need to change it into <em>slope-intercept form.</em>

<em />

3x = -y - 5

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8 0
3 years ago
Read 2 more answers
Can someone solve 2x-3y=9 and give me the slope and y intercept SHOW WORK please
Dominik [7]

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Hope this helped I am not good at explaining but I did this unit like two months ago.

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