the real world situation for ratio 29 to 30 is that their are 29 boys to 30n girls meaning less number of boys to girls in the class
Answer: 0.8 or 80%
Step-by-step explanation:
First find the total number of marbles:
10 + 15 + 25 = 50 marbles total
To find the number of marbles that are not black:
15 + 25 = 40 marbles that are not black
Set up ratio:
= 0.8 or 80%
Answer:
If you eat 1/3 of a whole pie, then you have to share the rest with your sibling(friend, etc)
Step-by-step explanation:
Answer:
See explanation
Step-by-step explanation:
You have to graph the system of inequalities presented as

Part A:
1. Draw a dotted line
(dotted because the sign < is without notion "or equal to"). Select one of two regions by substituting the coordinates of origin into inequality:

Since this inequlity is false, the origin doesn't belong to the shaded region, so you have to shade that part which doesn't contain origin (red part in attached diagram).
2. Draw a solid line
(solid because the sign ≥ is with notion "or equal to"). Select one of two regions by substituting the coordinates of origin into inequality:

Since this inequlity is true, the origin belongs to the shaded region, so you have to shade that part which contains origin (blue part in attached diagram).
The intersection of these two regions is the solution area.
Part B:
Plot point (-2,-2). Since this point doesn't belong to the solution area, this is not a solution of the system of two inequalities. You can check it mathematically - substitute x=-2 and y=-2 into the system:

Both inequalities are false, so (-2,-2) doesn't belong to the solution area.
Average person each year (or in other words, in 1 year) eats = 17 gallons.
so, in 12 years, they will eat = 17 * 12 = 204 gallons.