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Given that x2 + y2 + k = 60 and x = \(\sqrt{10}\) when y...

Mathematics
NECO 2008

Given that x2 + y2 + k = 60 and x = \(\sqrt{10}\) when y = 4, find the value of k.

  • A. 56
  • B. 34
  • C. 32
  • D. -34
  • E. -56
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
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Correct Answer: Option B
Explanation

x\(^2\) + y\(^2\) + k = 60

(√10)\(^2\) + (4)\(^2\) + k = 60

k + 10 + 16 = 60

k =  60 - 26

k = 34


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WAEC offline past questions - with all answers and explanations in one app - Download for free
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC offline past questions - with all answers and explanations in one app - Download for free