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Olenka [21]
3 years ago
8

Without using a calculator evaluate: - 81 + 203²

Mathematics
2 answers:
fiasKO [112]3 years ago
8 0

Step-by-step explanation:

multiply 203 by 200, you get 20300 and then multiply the 3 and you get 20909. Then subtract 81 from it and you have 20828 as the final answer.

geniusboy [140]3 years ago
4 0

Answer:

  • 41128

Step-by-step explanation:

<u>This problem requires the formula "a² + 2ab + b²".</u>

  • -81 + 203²
  • => -81 + (200 + 3)²
  • => -81 + (200² + 2(200)(3) + 3²)
  • => -81 + (40000 + 1200 + 9)
  • => -81 + (41209)
  • => 41209 - 81
  • => 41128

Hence, 41128 is the answer without using calculator.

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The linear function f is defined by f(x)= cx + d, where c and d are constants. If f(50) = 27,000 and f(100)= 38,000, what is the
yKpoI14uk [10]

Answer:

<h2>c = 220</h2>

Step-by-step explanation:

f(x) = cx + d

<u>For the first equation</u>

f(50) = 27,000

Substitute the value of x that's 50 into the expression

That's

50c + d = 27,000

<u>For the second equation</u>

f(100) = 38,000

Substitute the value of x that's 100 into the expression

We have

100c + d = 38,000

Subtract the first equation from the second one to eliminate d

That's

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Divide both sides by 50

We have the final answer as

<h3>c = 220</h3>

Hope this helps you

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Answer:

334

Step-by-step explanation:

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