Answer:
u have 7$
Step-by-step explanation:
Answer:
This problem is a great systems of equations problem--you have two different variables: song size and number of songs.
Let's call the number of standard version downloads (S) and the high quality downloads (H).
You can make two statements:
For number of songs downloaded: S + H = 910
For download size: 2.8(S) + 4.4(H) = 3044.
S will be the same number in both equations and H will be the same number in both equations, so to find S, we can rearrange the first statement to H = 910 - S, then substitute or plug in (910 - S) wherever you see an H in the second equation so that you have only S's in your equation. Should look like this:
2.8(S) + 4.4(910 - S) = 3044
2.8S + 4004 - 4.4S = 3044
-1.6S = -960
s = 600
Your question only asks for the standard version downloads, but to help you out in future Systems situations-
You can also solve for H once you have S by plugging it into either of your equations like this:
600 + H = 910
-600
H=310
Step-by-step explanation:
hope it help
*comment if my answer is wrong*
Answer:
492 gallons
Step-by-step explanation:
Total gallons of water collected = 4212
Gallons used for watering of plants = 114
Remaining gallons = 4212 - 114
= 4098
She uses 12% of the remaining water to was her laundry.
So that, gallons of water used to wash her laundry = 12% of 4098
= 
× 4098
= 491.76
≅ 492
She uses 492 gallons to wash her laundry.
