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The average of 4 numbers is 85 in the numbers 76 78 and 81 what number would come next?
Let denote the missing number with x. So we have:(76 + 78 + 81 + x)/4 = 85(235 + x)/4 = 85(4)(235 + x)/4 = (4)(85)235 + x = 340235 - 235 + x = 340 - 235x = 105
How do you solve x 2-18x-4 equals 0 by completing the square?
x² - 18x - 4 = o x² - 18x = 4 x² - 18x + (18/2)² = 4 + (18/2)² x² - 18x + 81 = 4 + 81 (x - 9)² = 85 x - 9 = ±√85 x = 9 ±√85 x = 9 + √85 or x = 9 - √85 if you are still confused, i want you to follow the related link that explains the concept of completing the square clearly.
What are the factors and prime factors of 85?
85 is a composite number because it has factors other than 1 and itself.The 4 factors of 85 are 1, 5, 17, and 85.The factor pairs of 85 are 1 x 85 and 5 x 17.The proper factors of 85 are 1, 5, and 17 or,if the definition you are using excludes 1, they are 5 and 17.The prime factors of 85 are 5 and 17.The distinct prime factors of 85 are also 5 and 17, since there is no repetition of factors.The prime factorization of 85 is 5 x 17.5 and 17 (both prime)85 = 5 x 17
What number do you add to 86 78 and 92 to make the average 85?
(86 + 78 + 92 + x) / 4 = 85 multiply by 4 on both sides of the equation to get.... (86 + 78 + 92 + x) = 340 Collect like terms.... 256 + x = 340 Subtract by 256 on both sides to solve for x .... x = 84
The sixth power of 4?
4,096 = 4 x 4 x 4 x 4 x 4 x 4
