Communitive Property of Addition
If the number of downloads of the standard version is x, and the high quality is x, 2.1*x+4.1*y=2761 (not 1010 due to that this is multiplied by 2.1 and 4.1, therefore representing the total amount of megabytes) In addition, there are 1010 total downloads, and it's either 2.1 MB or 4.1 MB, so x+y=1010.
We have
2.1x+4.1y=2761
x+y=1010
Multiplying the second equation by -2.1 and adding it to the first equation, we get 2y=2761-1010*2.1=640 and by dividing both sides by 2 we get y=320 downloads of the high quality version
2-(-x+5)
2+x-5
x-3
I decided to included the steps just in case you needed them
Answer:
Ryan earned $52 Mike earned $109 and Stormy earned $94
Step-by-step explanation:
x+2×+5+2x-10=255
5x-5=255
5x=260
x=52
Answer:
The card was worth $160.
Step-by-step explanation:
It is given that:
Percent of gift card used = 42%
Cost of groceries = $67.20
Let,
x be the total amount on gift card.
42% of x = 67.20
0.42x = 67.20
Therefore,
The card was worth $160.
