Answer:
6:7
Step-by-step explanation:
divide both sides by 7...
There are 6 balls to every box (a ratio of 6 to 1). Therefore, when there are 78 balls, there are 13 boxes.
Plug the x in :)
3(2) + 8
6 + 8
=14
Answer:
4
Step-by-step explanation:
1. if the mass of coffee worth $10 is 'x', then its worth is 10x, and the worth of the mixture is 5(x+20);
2. using the previous item it is possible to write the next equation:
5(x+20)=4*20+10*x; ⇒ x=4.
3. the required mass is 4 pounds.
3X-8=-4X+6 7X-8=6 7X=14 X=14\7=2
