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3 years ago

Haala buys 13 identical shirts and 22 identical ties for £363.01

Mathematics

1 answer:

Ugo [173]3 years ago

5 0

Answer:

£7.43

Step-by-step explanation:

The total cost is ...

13s +22t = 363.01

13(15.35) +22t = 363.01 . . . . fill in the cost of a shirt

22t = 163.46 . . . . . . . . . . . . . subtract 199.55

t = 7.43 . . . . . . . . . . . divide by 22

The cost of a tie is £7.43.

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If a=i+7j+k and b=i+11j+k, find a unit vector with positive first coordinate orthogonal to both a and

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