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.
Answer:
4
Step-by-step explanation:
there are 4 spaces to the left
8x10^-4
Answer:
284.765625
Step-by-step explanation:you get by subtracting 25% from 900 4 times
Answer:
Step-by-step explanation:
For this exercise let "d" represents the number of days that it took the grass in Jamie’s yard to grow one centimeter.
According to the information given in the exercise, you know that in ten days the grass grew sixteen centimeters.
Therefore, since it was growing at a constant rate, you can set up the following proportion:
Finally, you need to solve for "d" in order to find its value.
You get that this is:
Therefore, you can conclude that the grass in Jamie’s yard grew 1 centimeter in 0.625 days.