Answer:
Tens digit, x = 3
Unit digit, y = 8
Number = 38
Step-by-step explanation:
Let the 2 digit number = xy
y = x + 5 - - - (1)
10x + y = 4(x + y) - 6
10x + x + 5 = 4(x + x + 5) - 6
11x + 5 = 4(2x + 5) - 6
11x + 5 = 8x + 20 - 6
11x + 5 = 8x + 14
11x - 8x = 14 - 5
3x = 9
x = 9/3
x = 3
From (1)
y = x + 5
y = 3 + 5
y = 8
A plus b equals c for my knowledge
Answer:
I believe it does because the top numbers go up 3 times and the bottom goes up 6
Step-by-step explanation:
The amount of x is in weeks, while the 4 and the 25 are in days. There are 7 days in a week, so we would have to multiply the number of weeks by 7 to get how many days that would be. This amount of days, plus the 4 days, has to be able to equal 25. This gives you the equation:
7x+4=25
Steps to solve:
1. Subtract 4 from both sides to get the variable and its coefficient alone: 7x = 21.
2. Divide both sides by 7 to get x alone: x=3.
If we verify the equation by putting 3 in for x, we get 7(3)+4=25, then 21+4=25, and finally 25=25. 25 IS equal to 25, so this statement is true and 3 is correct for the value of x.
Therefore, the answers are:
a) 7x+4=25
b) x=3
Answer: 
<u>Step-by-step explanation:</u>
Average rate of change is the slope (m) between the two coordinates (-1, -1) and (1, -2).
