19. -x-2 = 2/3x + 3
5/3 x + 3 = -2
5/3x = -5
x = -3
20. none are correct, you can double check me by plugging in the x and y values in the coordanates into the first problem none of them worked out in the first equasion so no need to test the second
21. -3 is the answer, capable of being done by using desmos
In general, you cannot prove that because it is not true.
2 is rational. √2 is not.
Answer:
5 + 25 + 75 = 105 dollars
Step-by-step explanation:
The easiest way is to just take this day by day.
day 1: 5 dollars
day 2: day1^2 = 5^2 = 25
day 3: 3 * day2 = 3 * 25 = 75
Then sum them: 5 + 25 + 75
There are a lot of fraction that can be equal to the values given above. It can be as follows:
<span>1/5 = 2/10, 3/15, 4/20, 5/25, 6/30, 7/35, 8/40
4/7 = 8/14, 12/21, 16/28
6/30 = 12/60, 18/90, 24/120
5/15 = 1/3 , 10/30, 20/60
Hope this helps. Have a nice day.</span>
