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
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.
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
(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
Choose any number (except zero) for the first factor. Then divide 8.5 by that number to get the second factor.
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
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.
4 quarters=10 dimes x quarters=85 dimes quarter=10/4 dimes x (10/4 dimes) = 85 dimes x= 85 dimes/(10/4 dimes) x=34 Answer: 34 quarters
£85 x 4/5 = £17 x 4 = £68
4 with 13 remaining 85 - 13 = 72 = 18 x 4
40% of 85 .4 x 85 = 34
85% = 68 1% = 68/85 = 4/5 = 0.8 100% = 0.8 x 100 = 80 Answer = 80
340 x 1 170 x 2 85 x 4
119 85= 100% 8.5 = 10% 8.5 x 4 = 34 = 40% Answer: 85 + 34 = 119
1 x 340, 2 x 170, 4 x 85, 5 x 68, 10 x 34, 17 x 20, 20 x 17, 34 x 10, 68 x 5, 85 x 4, 170 x 2, 340 x 1 = 340
85% 34/40 x 100 = 3400/40 = 340/4 = 170/2 = 85/1
85/6 x 41/4 = = 53/6 x 17/4 = 53 x 17/6 x 4 = 901/24