6. Three numbers have a sum of 68. The second number is 1 less than twice the first. The third number is three times the second. What are the three numbers?

The numbers are 8, 15 and 45

Step-by-step explanation:

In this question, we are told to find three numbers according to the information in the question.

Let’s say the first number is x

The second number is 1 less than twice the first, that is 2x-1

The third number is 3 times the second meaning 3(2x-1)

Now let’s sum the numbers up to give 68

x + 2x - 1 + 6x -3 = 68

9x -4 = 68

9x = 68 + 4

9x = 72

x = 72/9

x = 8

The second number is 2x -1 = 2(8) - 1 = 16- 1 = 15

The third number is three times the second = 3(15) = 45

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

-81 -56 -27 0 81

step-by-step explanation: