Answer:
y=1/2x-4
Step-by-step explanation:
2y-x=-8
2y=x-8
y=1/2x-4
Hello, right answer is B) twice the original number
If you divide a number for a fraction, you are multiplying that number for the opposite of that fraction (so 1/2 = 2)
This means 4 : 1/2 = 4*2 = 8
Instead, if you multiply a number for 1/2, you are dividing it for 2.
Hope it helps :)
Answer:
$3.40 for 20 rolls. B
Step-by-step explanation:
First, you should find the unit price. So, divide .51 by 3, which equals 0.17. So, it costs $.17 for one sandwich roll. Next, multiply that number by 20, to get $3.40. So, it costs $3.40 for 20 rolls
Well if you buy only 1 of each, it would cost you 7.85 in total. if you subtract that from 20, it equals 12.15.
you can also make it a linear equation if you want more or less than 1 fruit and or sandwich
s=sandwich
f=fruit
5.7f+2.15f=20
I'd say that they are all equivalent because when you divided all of them it equals each other.
2:6 = 1/3
3:9 = 1/3
4:12 = 1/3