Pergunta
Work out: 5longdiv (14Hm205m) __ 6. Work out the square root of 0.0256 __ 7.Which is the least number that should be added to 39271 to make it divisible by 11? __ 8. Work out: 408div 4times 17-14+59 __
Solução
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PauloElite · Tutor por 8 anos
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6. To find the square root of 0.0256, we can rewrite it as (0.16)^2. The square root of (0.16)^2 is 0.16.<br /><br />7. To find the least number that should be added to 39271 to make it divisible by 11, we can use the divisibility rule for 11. According to the rule, the difference between the sum of the digits in the odd positions and the sum of the digits in the even positions should be a multiple of 11. In this case, the sum of the digits in the odd positions is 3 + 9 + 1 = 13, and the sum of the digits in the even positions is 2 + 7 = 9. The difference is 13 - 9 = 4, which is not a multiple of 11. Therefore, we need to add 11 - 4 = 7 to make the number divisible by 11.<br /><br />8. To work out the expression 408 ÷ 4 × 17 - 14 + 59, we can follow the order of operations (PEMDAS/BODMAS). First, we perform the division: 408 ÷ 4 = 102. Then, we perform the multiplication: 102 × 17 = 1734. Finally, we perform the addition and subtraction: 1734 - 14 + 59 = 1779.
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