Question

give answers and get marked as brainliest :D plss

Answer 1

Answer:

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Answer 2

Answer:

16. $\sqrt{102} = 10.09950494$

$17. 5^{2}+6^2+x^{2} = 31^2\\\\ 25+36+x^2= 961\\\\ 61+x^2 = 961\\\\ x^2=961-61\\\\x^2 = 900\\\\\sqrt{x^2}= \sqrt{900}\\\\x = 30$

18. $\sqrt[3]{512} = 8$

∴ 12 should be added to 500 to make it a perfect cube

20.

$f (x) = x^2 + 2x + 1\\\\\therefore f(1) = 1^2 + 2 (1) + 1\\\\f(1) = 1 + 2 + 1 = 4 \\\\f(x+1) = 4 (x^2 + 2x +1)\\\\f (x+1) = 4x^2 + 8x + 4\\\\f(x+1) = 2x^2 + 4x + 2$