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tatuchka [14]
3 years ago
15

If a = 2, b = 4 and c = 5, then what is the value of this expression? 5a + 3c - 2b

Mathematics
1 answer:
skad [1K]3 years ago
8 0
Its quite simple. All you have to due is substitute the numbers they gave you for each letter. So.... it would look like this > 5(2) + 3(5) - 2(4) = ? Now all you have to do is solve it! Hope this helps :)
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Pixel goes shopping with one hundred dollars and ends up buying three different types of items: A, B, and C. The unit price of A
mixas84 [53]

Answer:

  • A - 16, B - 79, C - 5

Step-by-step explanation:

<u>Given</u>

  • A costs 5$
  • B costs  $0.25
  • C costs $0.05
  • A + B + C = 100
  • 5A + 0.25B + 0.05C = 100 ⇒ 100A + 5B + C = 2000

<u>Subtract the first equation from the second:</u>

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<u>We have a restriction in numbers:</u>

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and

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A can be 16 or 18 as it should be even number to get B the whole number.

<u>If A = 16:</u>

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<u>If A = 18:</u>

  • 99*18 + 4B = 1900
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<u>So we get:</u>

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<u>Let's proof the numbers:</u>

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5 0
2 years ago
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