Answer:
The slope is -6 and the y intercept is (0, -30)
Step-by-step explanation:
Rearrange the equation into y = mx + b form, where m is the slope and b is the y intercept:
12x + 2y = -60
Subtract 12x from both sides:
2y = -12x - 60
Divide each side by 2:
y = -6x - 30
So, the equation in slope intercept form is y = -6x - 30
The slope is -6 and the y intercept is (0, -30)
If x = # of quarters, then, the # of dimes will be equal to 2x. The total value (z) would be equal to:
z = 0.25x + 0.10(2x)
Then, since you switch the quarters and the dimes, and you have a new total, the resulting equation will be:
1.2 + z = 0.25(2x) + 0.10(x)
Plug in the values you know:
1.2 + (0.25x + 0.10(2x)) = 0.25(2x) + 0.10(x)
Solve for x:
1.2 + (0.25x + 0.20x) = 0.50x + 0.10x
1.2 + 0.45x = 0.60x
1.2 = 0.15x
x = 1.2/0.15 = 8
This means that there are 8 Quarters in her bag right now. So, the amount of dimes is just 2x which is 16. So your answer will be:
She has 8 Quarters and 16 Dimes in her bag right now. Or, $3.60.
If this doesn't make sense, then tell me. I have some resources where I got the answer from to put it into simplest terms. I have the website if you want.
Yes, by definition a statistical question is answered by collecting data and where there will be variability in that data.
The mean study time is less for class b then class a
