joan decided to use her calculator to find the sum of the first 15 counting numbers instead of the formula. By mistake she entered 16 numbers. She entered one number twice . Her answer was 4 more than a perfect square number. Which number did joan enter twice?
The numbers are: 48+22 = 70
Let x represent the first number; 2x - 3 then represents the second number. x + 2x - 3 = 75 3x = 78 x = 26 2x - 3 = 49 So the numbers are 26 and 49.
5 and 2
Twice. a*a is a squared.
the sum of three numbers is 64. the second number is 3 less than the first number, the third number is 11 less than twice the first. what are the three numbers?
Let the numbers be x and y If: x+2y = 3 and 2x+y = 27 Then the simultaneous equations work out as: x = 17 and y = -7
11,33
13 and 26
18 and 6
If you can use the same number twice, such as 11 or 22, then there are 100 possible numbers (00, and 01-99). If you can not use the same number twice, the answer is 90.
joan decided to use her calculator to find the sum of the first 15 counting numbers instead of the formula. By mistake she entered 16 numbers. She entered one number twice . Her answer was 4 more than a perfect square number. Which number did joan enter twice?
yes, the recommended ammount of sex you should have is twice a week
The third number is 112, the numbers are 86, 86, 112, 172
The numbers are: 48+22 = 70
Let x represent the first number; 2x - 3 then represents the second number. x + 2x - 3 = 75 3x = 78 x = 26 2x - 3 = 49 So the numbers are 26 and 49.
The sum of any two consecutive whole numbers is always odd, and equal to one more than twice the first number (2x+1).